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: 17



Work Step by Step

Multiply the second equation by 2 and add the equations together 10y = 30 divide each side by 10 plug y= 3 into one of the equations -3x + 3(3) = -6 subtract 9 from both sides -3x = -15 divide -3 from both sides
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