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3-x = (1/4)*(7-x)-((1/3)*(2*x-3)) // - (1/4)*(7-x)-((1/3)*(2*x-3))
(1/3)*(2*x-3)-((1/4)*(7-x))-x+3 = 0
(-1/4)*(7-x)+(1/3)*(2*x-3)-x+3 = 0
1/3*(2*x-3)-1/4*(7-x)-x+3 = 0
1/3*(2*x-3)-1/4*(7-x)-x+3 = 0
11/12*x-x-11/4+3 = 0
3-1/12*x-11/4 = 0
1/4-1/12*x = 0
1/4-1/12*x = 0
1/4-1/12*x = 0 // - 1/4
-1/12*x = -1/4 // : -1/12
x = -1/4/(-1/12)
x = 3
x = 3
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