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