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: 39


$$ y=0,\:x=20$$

Work Step by Step

Solving the system of equations using elimination, we find: $$ \begin{bmatrix}2x-\frac{2}{3}y=40\\ 2x+\frac{5}{2}y=40\end{bmatrix} \\ \frac{19}{6}y=0 \\ y=0 \\ x=20+\frac{1}{3}\cdot \:0 \\ x=20$$
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