Algebra: A Combined Approach (4th Edition)

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 318: 9


x+y = 6500 x-y=800

Work Step by Step

Let x be one account and y be the second account. Since there is 6500 in both accounts combined, adding x and y will give 6500. x+y = 6500 Let's say x is the larger account. It has 800 more than the smaller account, y. So if we take away 800 (x-800) from x, we will be equal to y. x-800=y Rearrange y and 800 to the other sides: x-y=800 And the answer is: x+y = 6500 x-y=800
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