Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 8 - Systems of Linear Equations and Problem Solving - 8.2 Solving by Substitution or Elimination - 8.2 Exercise Set - Page 517: 46



Work Step by Step

Solving the system of equations using elimination, we find: $$ \begin{bmatrix}1.5x+y=25\\ 1.5x+1.2y=33\end{bmatrix}\\ 0.2y=8\\ y=40,\:x=-10$$
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