Answer
(3,0)
Work Step by Step
Add the 2 equations.
$\ \ 3x-y=9$
$\underline{\ \ 2x+y=6}$
$\ \ 5x\ \ \ \ \ \ \ =15$ divide both sides by 5
$\ \ x\ \ \ \ \ \ \ \ \ =3$
Substitute and solve for y.
$2x+y=6$
$2(3)+y=6$
$6+y-6=6-6$
$y=0$
Elementary Technical Mathematics
by Nelson, Robert; Eren, Dale;
Published by
Brooks Cole
ISBN 10:
1285199197
ISBN 13:
978-1-28519-919-1
Chapter 9 - Section 9.2 - Solving Pairs of Linear Equations by Addition - Exercises - Page 332: 4
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