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March 31, 2015

March 31, 2015

Posted by **Anonymous** on Saturday, April 28, 2007 at 4:00am.

x+y=12

5x+10y=100

y=12-x

5x+10(12-x)

5x+120-10x=100

5x-10x=2-5x=20

x4

y8

Looks good to me.

Matt

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