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May 18, 2013

# Homework Help: algerbra

Posted by miranda on Wednesday, December 22, 2010 at 7:55pm.

4x+4y=56
3x-16y=-91 slove by using systems of elimination multiply

• algerbra - bobpursley, Wednesday, December 22, 2010 at 8:02pm

I recommend multiply the first equation by 4. Then add the two equations. You should get then

19x+0y=4*56 -91

• algerbra - Reiny, Wednesday, December 22, 2010 at 8:02pm

first equation times 4, then add to the second
19x = 133
x = 7

sub back into first
28 + 4y = 56
4y = 28
y = 7 , so x=7 and y=7

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