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September 21, 2014

September 21, 2014

Posted by **Wanda** on Wednesday, August 8, 2012 at 11:31am.

4x-2y=16

5x+7y=1

- Elementary Algebra -
**Reiny**, Wednesday, August 8, 2012 at 11:55amdivide the first by 2, then solve for y

y = 2x-8

sub into the second

5x + 7(2x-8) = 1

19x = 57

x = 3

then y = 2(3) - 8 = -2

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