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(3/4)*(20*x-12)-7 = x+5 // - x+5
(3/4)*(20*x-12)-x-7-5 = 0
3/4*(20*x-12)-x-7-5 = 0
3/4*(20*x-12)-x-7-5 = 0
14*x-9-7-5 = 0
14*x-16-5 = 0
14*x-21 = 0
14*x-21 = 0
14*x-21 = 0 // + 21
14*x = 21 // : 14
x = 21/14
x = 3/2
x = 3/2
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