Intermediate Algebra (6th Edition)

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

Chapter 4 - Section 4.3 - Systems of Linear Equations and Problem Solving - Exercise Set - Page 231: 14

Answer

12 and 18

Work Step by Step

We first write the two equations given the information provided in the problem: $ 2x+y=42$ $x-y=-6$ We substitute: $2x+(x+6)=42$ $ x = 12$ We substitute back into the second equation to find that the second number is 18.
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