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(3/4)*(x-4) = 13 // - 13
(3/4)*(x-4)-13 = 0
3/4*(x-4)-13 = 0
3/4*(x-4)-13 = 0
3/4*x-16 = 0
3/4*x-16 = 0
3/4*x-16 = 0 // + 16
3/4*x = 16 // : 3/4
x = 16/3/4
x = 64/3
x = 64/3
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