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December 21, 2014

December 21, 2014

Posted by **jorge** on Thursday, May 3, 2012 at 2:54pm.

-a+b=-4

2a-3b=-2

- math algebra -
**PsyDAG**, Friday, May 4, 2012 at 12:18pmMultiply first equation by 2, then add the equations.

-2a+2b=-8

2a-3b=-2

-b = -10

Solve for b then a.

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