Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Cha658pter 9 - 9.3 - Multivariable Linear Systems - 9.3 Exercises - Page 658: 19


$x=-2; y=2$

Work Step by Step

Multiply the first equation by $2$, then add it to equation $2$. $2x+2y-2x+3y=0+10 \implies y=2$ Now, we will plug the value of $y$ into the first equation to find the value of $x$. We get: $x+2=0 \implies x=-2$ Thus, $x=-2; y=2$
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