Answer
$x=1,y=-2$
Work Step by Step
Equating the two sides, the equations we get are:
$2x=2\\x=1$,
$2y=-4\\y=-2$.
We also have
$2(x+y)=-2$ and $2(x-y)=6$
which are satisfied by
$x=1,y=-2$.
Hence, this is the solution.
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
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: 45
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