SOLUTION: How do i solve 7x + 2y = -8 8y = 4x

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Question 370217: How do i solve 7x + 2y = -8
8y = 4x
Answer by ichudov(507) About Me  (Show Source):
You can put this solution on YOUR website!
Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
+system%28+%0D%0A++++-4%5Cx+%2B+8%5Cy+=+0%2C%0D%0A++++7%5Cx+%2B+2%5Cy+=+-8+%29%0D%0A++We'll use substitution. After moving 8*y to the right, we get:
-4%2Ax+=+0+-+8%2Ay, or x+=+0%2F-4+-+8%2Ay%2F-4. Substitute that
into another equation:
7%2A%280%2F-4+-+8%2Ay%2F-4%29+%2B+2%5Cy+=+-8 and simplify: So, we know that y=-0.5. Since x+=+0%2F-4+-+8%2Ay%2F-4, x=-1.

Answer: system%28+x=-1%2C+y=-0.5+%29.