Posted by Anonymous on Thursday, February 7, 2013 at 3:54pm.
2x-3y =-3
-1(3x-3y=18)
2x-3y=-3
+ -3x+3y=-18 (add two equations)
-x = -21
x = 21
2(21)-3y =-3
42-3y=-3
-3y=-45
y=15
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