Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 3 - Mid-Chapter Check Point - Page 220: 2

Answer

The solution is $x=1 $ and $y=-2 $

Work Step by Step

The equations are $3x+4y=-5 $ ... (1) $2x-3y=8 $ ... (2) Multiply equation (1)by $-2$ and equation (2) by $3$. $ -6x-8y=10 $ $6x-9y=24 $ Add both equations. $ -17y=34 $ $y=\frac{34}{-17}$ $ y=-2 $ Substitute into equation (1). $ 3x+4(-2)=-5 $ $ 3x-8=-5 $ $ 3x=-5+8 $ $3x=3 $ $ x=1 $.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.