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 - 6-3 Solving Systems Using Elimination - Practice and Problem-Solving Exercises - Page 382: 10



Work Step by Step

subtract the equations from each other 3x = 18 divide each side by 3 plug in x=6 to one of the equations 6 -7y = -15 subtract 6 from both sides -7y = -21 divide -7 by both sides
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