Posted by Habtamu Mareba on Tuesday, November 6, 2012 at 12:21am.
are you solving the 2 equations
2x-2y = 4
3x+4y = 6 ???
double the 1st, then add it to the 2nd
4x-4y=8
3x+4y=6
7x = 14
x = 2
into the 1st:
4 - 2y = 4
-2y = 0
y = 0
x=2 , y = 0
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