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(3/4)*(x-1) = x-3 // - x-3
(3/4)*(x-1)-x+3 = 0
3/4*(x-1)-x+3 = 0
3/4*(x-1)-x+3 = 0
3-1/4*x-3/4 = 0
9/4-1/4*x = 0
9/4-1/4*x = 0
9/4-1/4*x = 0 // - 9/4
-1/4*x = -9/4 // : -1/4
x = -9/4/(-1/4)
x = 9
x = 9
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