Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 4 - Section 4.3 - Solving Systems of Linear Equations by Addition - Exercise Set: 19

Answer

x = -2 y = 0

Work Step by Step

8x = -11y - 16 first equation 8x + 11 y = -16 subtract 11y from both sides 2x + 3y = -4 second equation -8x -12y = 16 multiply by -4 . we have 8x + 11y = -16 -8x -12y =16 ___________________ -y = 0 add the equations to eleminate x y = 0 let y = 0 in first equation 8x = -$11\times0$ -16 8x = -16 x = -2 divide both sides by 8
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