Answer
148 degrees and 32 degrees
Work Step by Step
$x+y=180$
$x=4y+20$
$x+y=180$
$4y+20+y=180$
$5y=160$
$5y/5=160/5$
$y=32$
$x=4y+20$
$x=4*32+20$
$x=128+20$
$x=148$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 4 - Section 4.4 - Systems of Linear Equations and Problem Solving - Exercise Set - Page 321: 36
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