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