Algebra: A Combined Approach (4th Edition)

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

Chapter 4 - Section 4.2 - Solving Systems of Linear Equations by Substitution - Exercise Set - Page 302: 55

Answer

$(3.28, 2.1)$

Work Step by Step

$3x+2y=14.04$ $5x+y=18.5$ $5x+y=18.5$ $y=18.5-5x$ $3x+2y=14.04$ $3x+2*(18.5-5x)=14.04$ $3x+37-10x=14.04$ $37-7x=14.04$ $22.96 = 7x$ $22.96/7 = 7x/7$ $x = 3.28$ $5x+y=18.5$ $5*3.28+y=18.5$ $16.4 +y=18.5$ $y=2.1$
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