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August 28, 2015

Homework Help: Math

Posted by B.B. on Saturday, April 17, 2010 at 12:19pm.

Can someone please help with this problem?
Solve by the elimination method.
7r-9s= -58
9r+7s=74
I know that I need to multiply the first equation by 9 and the second equation by 7.
The equations look like this:
63r-81s= -522
63r+49s=518
After this I get confused. Could someone please help?
Thanks.

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