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February 1, 2015

February 1, 2015

Posted by **stella** on Monday, May 23, 2011 at 2:54pm.

3x - 5y = -16 and 2x + 5y = 31

- algebra -
**Reiny**, Monday, May 23, 2011 at 5:24pmadd them:

5x = 15

x = 3

sub into 2x+5y=31

6 + 5y = 31

5y = 25

y = 5

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