Algebra 1: Common Core (15th Edition)

Published by Prentice Hall
ISBN 10: 0133281140
ISBN 13: 978-0-13328-114-9

Chapter 6 - Systems of Equations and Inequalities - 6-2 Solving Systems Using Substitution - Practice and Problem-Solving Exercises: 14

Answer

(13, -5)

Work Step by Step

We first solve for y: $7=2-y \\\\ 5=-y \\\\ y=-5$ We plug -5 in for y and solve for x: $-5=8-x \\\\ -13=-x \\\\ x=13$ We plug our values for x and y back into the first equation and confirm that our answer is, indeed, correct.
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