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Published byGervase Thomas Park Modified over 6 years ago

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**Chapter 7 – Solving Systems of Linear Equations**

7.2 – Solving Linear Systems by Substitution

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**7.2 – Solving Linear Systems by Substitution**

Today we will learn how to: Use substitution to solve a linear system Model a real-life situation using a linear system

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**7.2 – Solving Linear Systems by Substitution**

Example 1 Solve the linear system. 2x + 6y = 15 x = 2y

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**7.2 – Solving Linear Systems by Substitution**

Example 2 Solve the linear system. 3x + y = 5 2x – y = 10

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**7.2 – Solving Linear Systems by Substitution**

STEPS FOR SOLVING A LINEAR SYSTEM BY SUBSTITUTION

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**7.2 – Solving Linear Systems by Substitution**

Example 3 Solve the linear system. x + 2y = 4 -x + y = -7

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**7.2 – Solving Linear Systems by Substitution**

HOMEWORK Page 408 #14 – 40 even

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