Monday, August 26, 2013

Solve: x+y=3, 2y=3x-4

Solving... 

1) x+y=3
2) 2y=3x-4 

1)...
x=3-y 

2)...
2y=3(3-y)-4
2y=9-3y-4
5y=5
y=1 

1)...
x=3-1
x=2
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