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April 19, 2015

Posted by **Christina** on Monday, August 13, 2012 at 3:29pm.

9x-y=72

x+4y=45

- algebra -
**Anonymous150**, Monday, August 13, 2012 at 7:55pm9x-y=72

x+4y=45

get either x to be same value or y... in this case i chose y

4(9x-y=72)

x+4y=45

so

36x-4y=288

x+4y=45

so

37x=333

x= 9

then plug 9 into one of the equation to get y.

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