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X-y=3 X+2y=-6 Solve using substitution

X-y=3 X+2y=-6 Solve using substitution
asked 78.3k views
5 votes
X-y=3
X+2y=-6
Solve using substitution

asked
User Jan Wilamowski
by
7.8k points

1 Answer

4 votes
X-y=3=>x=3+y
X+2y=-6
=========
3+y+2y=-6
3+3y=-6
3y=-6-3
3y=-9
y=-3

X+2y=-6
X+2(-3)=-6
X-6=-6
X=0
answered
User Tashay
by
8.4k points
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