Answer
The Gobi Desert is 500,000 square miles and the Sahara Desert is 3,500,000 square miles wide.
Work Step by Step
$s=7g$
$s+g=4000000$
$7g+g=4000000 \lt=\gt 8g =4000000 \lt=\gt g =500,000 =\gt s= 3,500,000$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 2 - Section 2.4 - An Introduction to Problem Solving - Exercise Set - Page 136: 55
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