SOLUTION: 7x + 9y = -8 5x - 9y = -52

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Question 443115: 7x + 9y = -8 5x - 9y = -52
Answer by swincher4391(1107) About Me  (Show Source):
You can put this solution on YOUR website!
7x + 9y = -8
5x - 9y = -52
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Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
+system%28+%0D%0A++++7%5Cx+%2B+9%5Cy+=+-8%2C%0D%0A++++5%5Cx+%2B+-9%5Cy+=+-52+%29%0D%0A++We'll use substitution. After moving 9*y to the right, we get:
7%2Ax+=+-8+-+9%2Ay, or x+=+-8%2F7+-+9%2Ay%2F7. Substitute that
into another equation:
5%2A%28-8%2F7+-+9%2Ay%2F7%29+%2B+-9%5Cy+=+-52 and simplify: So, we know that y=3. Since x+=+-8%2F7+-+9%2Ay%2F7, x=-5.

Answer: system%28+x=-5%2C+y=3+%29.