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Solve using substitution y= x+4 x-y= -4
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2 votes
Solve using substitution
y= x+4
x-y= -4

User ToddBFisher
by
8.1k points

1 Answer

3 votes
X-(x+4)=-4

X-x-4=-4
-4=-4

All real numbers
User Vitaliy Shibaev
by
8.6k points
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