College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 6, Matrices and Determinants - Section 6.2 - The Algebra of Matrices - 6.2 Exercises - Page 512: 46

Answer

$x=5,y=1$.

Work Step by Step

Equating the two sides, the equations we get are: $x-y=4,y-x=-4$ (these two are equivalent) $-y-x=-6, x+y=6$ (these two are equivalent) Hence, we have to solve the system: $x-y=4,x+y=6$ Summing the two equations, we get: $2x=10\\x=5$. Plugging this into the first equation, we get: $5-y=4\\y=1$ Hence, the solution is: $x=5,y=1$.
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