College Algebra (11th Edition)

Published by Pearson
ISBN 10: 0321671791
ISBN 13: 978-0-32167-179-0

Chapter 5 - Section 5.1 - Systems of Linear Equations - 5.1 Exercises - Page 486: 14

Answer

x=-2 y=3

Work Step by Step

Solve for x in terms of y in the second equation. 2x=9y-31 x=((9y-3)/2) Substitute for x in the first equation and then solve for x. 4((9y-3)/2)+5y=7 18y-62+5y=7 23y=69 y=3 Substitute y=3 in the second equation 31+2x=9(3) 2x=-4 x=-2
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