College Algebra (10th Edition)

Published by Pearson
ISBN 10: 0321979478
ISBN 13: 978-0-32197-947-6

Chapter 8 - Section 8.1 - Systems of Linear Equations: Substitution and Elimination - 8.1 Assess Your Understanding - Page 555: 24



Work Step by Step

$4x+5y = -3$ $(1)$ $-2y=-8$ $(2)$ Divide Equation $(2)$ by -2 $y=4$ Substitute this back into Equation $(1)$ $4x+5(4)=-3$ $4x+20=-3$ $4x=-23$ $x=-\frac{-23}{4}$
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