Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 4 - Section 4.3 - Solving Systems of Linear Equations by Addition - Exercise Set: 17

Answer

x = 2 y =- $\frac{1}{2}$

Work Step by Step

3x - 2y = 7 first equation 6x - 4y = 14 multiply by 2 both sides 5x + 4y = 8 second equation ________________ 11x = 22 add the equations to eliminate y x = 2 divide both sides by 11 let x = 2 in first equation $3\times2$ - 2y = 7 6 - 2y = 7 - 2y = 1 subtract 6 from both sides y = - $\frac{1}{2}$
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