Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 3 Linear Systems and Matrices - 3.2 Solve Linear Systems Algebraically - Guided Practice for Example 4 - Page 163: 8



Work Step by Step

The problem asks us to solve algebraically, so we find: $$3\cdot \frac{21+2y}{12}+12y=-4 \\ y=-\frac{37}{50} $$ Thus: $$x=\frac{21+2\left(-\frac{37}{50}\right)}{12} \\ x=\frac{122}{75}$$
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