What is the value of x in the system of equations below? 3x + y + 2z = − 10 x + 5y + 2z = − 12 − 2x + 3y = − 1 Answer choices A. 1 B. -3 C. 3 D. -1

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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Author:HOLT MCDOUGAL
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Chapter8: Linear Functions
Section: Chapter Questions
Problem 6CST
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What is the value of x in the system of equations below?
3x + y + 2z = − 10
x + 5y + 2z = − 12
− 2x + 3y = − 1

Answer choices

A. 1
B. -3
C. 3
D. -1

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