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Solve by substitution x=-3y-2 -4x-5y=8
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5 votes
Solve by substitution
x=-3y-2
-4x-5y=8

User Preacher
by
7.4k points

2 Answers

4 votes
the solution is( -2,0) did that in my head

User Paul Hatcher
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8.4k points
5 votes
x = -3y - 2
-4x - 5y=8

-4(-3y - 2) -5y = 8
12y + 8 - 5y = 8
7y + 8 = 8
7y = 0
y = 0

x= -3(0) - 2
x = -2

solutions (-2,0)

User Mykel
by
8.2k points
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