Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 4 - Section 4.1 - Solving Systems of Linear Equations in Two Variables - Exercise Set - Page 212: 64

Answer

Ordered Pair Solution $(-0.8,1.5)$

Work Step by Step

We have $$1)x-3y=-5.3$$ $$2)6.3x+6y=3.96$$ 2(1)+(2) $$2x+6.3x-6y+6y=-10.6+3.96$$ $$8.3x=-6.64$$ $$x=-0.8$$ Solving for $y$ $$y = (5.3-0.8)\div3=1.5$$ Ordered Pair Solution $(-0.8,1.5)$
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