Solving systems by substitution examples

    • How do you solve each system by substitution?

      To solve systems using substitution, follow this procedure: Select one equation and solve it for one of its variables. In the other equation, substitute for the variable just solved. Solve the new equation. Substitute the value found into any equation involving both variables and solve for the other variable.

    • How do you solve the system of equations using substitution?

      The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.

    • How do you solve system by substitution?

      Solving Systems by Substitution The method of solving "by substitution" works by solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Here is how it works.

    • How Doi solve system of equations by substitution?

      Steps to Solving Systems of Equations by Substitution Solve one equation for one of the variables. Substitute the resulting expression into the other equation to replace the variable. Then solve the equation. Substitute to solve for the other variable. Write the solution as an ordered pair (x, y) and check your answer. ...

    • [PDF File]Solving Systems of Linear Equations: Which Method to Use?

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      Potential Advantages of solving systems by Substitution If at least one of the variables in one of the equations is an understood 1 or -1, you can avoid introducing any fractions into your algebra. This method works on systems with any number of variables, and on linear and non-linear systems.

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    • [PDF File]Systems of Equations with TI-Nspire™ CAS …

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      dents explicitly solve systems of equations step-by-step. The following sections show how to do this with TI-Nspire using both the substitution method and the elimination method. 3.3 The Substitution Method The substitution method is a simple algebraic method for solving systems of equations consisting of equations in two or three variables.

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    • [PDF File]Solving Systems of Linear Equations

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      Solving Systems of Linear Equations There are two basic methods we will use to solve systems of linear equations: I Substitution I Elimination We will describe each for a system of two equations in two unknowns, but each works for systems with more equations and more unknowns. So assume we have a system of the form: ax +by = c dx +ey = f

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    • [PDF File]Simultaneous equations solving by substitution

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      Solving by substitution . This can be checked by substituting back into both original equations to ensure that the left-hand and right-hand (LHS) and (RHS) sides are equal for these values of x and y. tudent. C. L. earning. S. entre Equations 5/2013 @ SLC 1 of 2 .

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    • [PDF File]4.2 Systems of Equations - Substitution

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      Systems of Equations - Substitution Objective: Solve systems of equations using substitution. When solving a system by graphing has several limitations. First, it requires the graph to be perfectly drawn, if the lines are not straight we may arrive at the wrong answer. Second, graphing is not a great method to use if the answer is

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    • [PDF File]WS 6.2A Solving Systems by Substitution isolated

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      6.2A Solving Systems by Substitution (isolated) Solve each system by substitution. Steps 1) Solve one of the equations for x or y. • This is already done for you for this section. 2) Substitute the expression into the other equation and solve for the variable. 3) Once you solved one for one of the variables, plug this solution into one of the ...

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    • [PDF File]Systems of Equations Substitution

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      Solving Systems of Equations by Substitution Date_____ Period____ Solve each system by substitution. 1) y = 6x − 11 −2x − 3y = −7 (2, 1) 2) 2x − 3y = −1 y = x − 1 (4, 3) 3) y = −3x + 5 5x − 4y = −3 (1, 2) 4) −3x − 3y = 3 y = −5x − 17 (−4, 3) 5) y = −2 4x − 3y = 18 (3, −2) 6) y = 5x − 7 −3x − 2y = −12 ...

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    • [PDF File]Section 2.2: Solving Systems of Equations by Substitution

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      The first algebraic approach is called substitution. We will build the concepts of substitution through several examples, then end with a five-step process to solve problems using this method. Example 1. Solve the systems of equations by using substitution: 5 23 x yx We already know x 5, substitute this into the other equation y 2( ) 35

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    • [DOC File]www.milc.fcps.net

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      The first step of the substitution method is on the right. Explain WHAT was done and WHY it would be OK to do that. > Begin to solve: Using the equation from step 1 of the substitution method (also written below), solve for the variable. (Show your work!) 2x + x + 1 = 7. x = _____ Finish solving: y = x + 1 ...

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    • [DOCX File]Notes for Lesson 1-6: Order of Operations

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      Notes for Lesson 6-2: Solving Systems by Substitution. 6-2.1 – Solving systems of linear equations by substitution. Sometimes we can not solve systems by graphing because the points do not come out nice. So instead we can use a method called substitution. Substitution is when you …

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    • [DOC File]ALGEBRA II – SUMMER PACKET

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      VIII. Solving Systems of Equations . Solve for x and y: x = 2y + 5 3x + 7y = 2. Using substitution method: 3(2y + 5) + 7y = 2. 6y + 15 + 7y = 2. 13y = -13. y = -1. x = 2(-1) + 5. x=3. Solution: (3, -1) Solve for x and y: 3x + 5y = 1 2x + 3y = 0. Using linear combination (addition/ subtraction) method: 3(3x + 5y = 1)-5(2x + 3y = 0) 9x + 15y = 3 ...

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    • [DOC File]SOLVE SYSTEMS OF EQUATIONS - Bloomfield College

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      SOLVE SYSTEMS OF EQUATIONS BY SUBSTITUTION METHOD STEPS: 1) Choose one equation to solve for one variable. 2) Substitute the chosen equation into the unused equation and solve. 3) Substitute the value found in step 2 into any one of the original equations and solve for …

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    • [DOC File]Substitution Method Worksheet

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      Systems of Equations: Substitution Method #1 (2/27) Solve the following by using the substitution method. Remember solve for both “x” and “y” ...

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    • [DOC File]2nd Semester ALGEBRA PROJECT:

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      Solving systems using substitution/Solving systems using elimination. Solving systems by graphing/Solving systems using elimination. Solving systems using substitution/Solving systems by graphing. Writing equations of Parallel lines/ Writing equations of Perpendicular lines.

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    • [DOC File]Algebra Equation Solving Flow Chart

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      Substitution: solve one equation for a variable, substituting the expression you obtain into the second equation, then solving that resulting equation for a value, or . Elimination: add multiples of the equations together so that one of the variables is eliminated. Example: Solve . First, graph the equations.

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    • [DOC File]Solving systems by substitution

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      Solving systems by substitution Use this method when at least one equation is given with a variable as the ___________________ of the equation Solving systems by elimination Use when the equations are in standard form () Solving systems using matrices

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    • [DOC File]Solving Systems of Equations

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      Solving Systems with Linear Combinations (“Elimination”): Sometimes solving a system of equations using substitution can be very difficult. For these problems we solve using Linear Combinations (or Elimination). With elimination you solve by eliminating one of the variables. This is accomplished by adding the 2 equations together.

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    • [DOC File]Solving Systems of Equations

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      Solving Systems with Linear Combinations (“Elimination”): Sometimes solving a system of equations using substitution can be very difficult. For these problems we solve using Linear Combinations (or Elimination). With elimination you solve by eliminating one of the variables. This is accomplished by adding the 2 equations together.

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