Posted by Mayank on Monday, July 16, 2012 at 2:32am.
3x+7y=-5 (i)
4x-3y=8 (ii)
(i)x 4:
12x+28y=-20 (iii)
(ii)x 3:
12x-9y=24 (iv)
(iv)-(iii):
-37y=44
y=-44/37
subs y into (i):
3x+7(-44/37)=-5
3x= -5+308/37
x=148/37
3x = -185/37 + 308/37 = 123/37
x = 41/37
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