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March 29, 2015

March 29, 2015

Posted by **akaray** on Tuesday, January 5, 2010 at 5:14am.

5x+5y=-7

7x-3y=19

- algebra -
**drwls**, Tuesday, January 5, 2010 at 6:31amRewrite as:

15x + 15y = -21 and

35x - 15y = 57

Now add them. The y terms cancel.

50 x = 36

x = 36/50 = 18/25

(90/25) + 5y = -7 = -175/25

5y = -265/25

y = -53/25

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