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December 20, 2014

December 20, 2014

Posted by **kyle** on Tuesday, December 5, 2006 at 10:23pm.

-4x-9y=1

-x + 2y =-4 WHat is x and y?

Two equations in two unknowns. Here is a quick way to solve them

-4x - 9y = 1

4x - 8y = 16

(I got that my multiplying both side so the secind equation that you provided by -4)

Now add the two equations:

-17y = 17

y = -1

Use that and any of the first equations to solve for x.

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