Answer
$y=7-\frac{7x}{3}$
Work Step by Step
We are given that $7x+3y=21$.
To solve for y, first subtract 7x from both sides.
$3y=21-7x$
Divide both sides by 3.
$y=\frac{21-7x}{3}=7-\frac{7x}{3}$
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 3 - Cumulative Review - Page 199: 22
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