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January 29, 2015

January 29, 2015

Posted by **Kelli** on Monday, May 23, 2011 at 7:57pm.

-2x - 8y = 22

-6x - y = 20

- Linear Equations -
**MathMate**, Tuesday, May 24, 2011 at 8:54am-2x - 8y = 22 ...(1)

-6x - y = 20 ...(2)

(2)-3(1)

23y = -46

y = -2 ...(3)

substitute (3) in(2)

-6x +2 = 20

x=-3 ...(4)

substitute (3) and (4) in (1)

6 + 16 =22 = RHS

So

x=-3, y=-2

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