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(1/2)*(2*x-4)-((1/2)*x) = (3/2)*x-4 // - (3/2)*x-4
(1/2)*(2*x-4)-((1/2)*x)-((3/2)*x)+4 = 0
(1/2)*(2*x-4)+(-1/2)*x+(-3/2)*x+4 = 0
1/2*(2*x-4)-x/2+(-3*x)/2+4 = 0
(1/2*2*(2*x-4))/2-x/2+(-3*x)/2+(2*4)/2 = 0
1/2*2*(2*x-4)-x-3*x+2*4 = 0
x-3*x-4+8 = 0
8-2*x-4 = 0
4-2*x = 0
(4-2*x)/2 = 0
(4-2*x)/2 = 0 // * 2
4-2*x = 0
4-2*x = 0 // - 4
-2*x = -4 // : -2
x = -4/(-2)
x = 2
x = 2
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