SOLUTION: Solve the system by substitution. x + 3y = –4 2x + 2y = –8

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Question 773479: Solve the system by substitution.
x + 3y = –4
2x + 2y = –8
Answer by ramkikk66(644) About Me  (Show Source):
You can put this solution on YOUR website!
x + 3y = –4
2x + 2y = –8
From the 1st eqn, x = -4 -3*y
Substituting for x in the second equation
2%2A%28-4+-+3%2Ay%29+%2B+2%2Ay+=+-8
-8+-6%2Ay+%2B+2%2Ay+=+-8
-4%2Ay+=+0
y+=+0
x+=+-4+-+3%2Ay+=+-4
Solution is x+=+-4 and y+=+0