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(28*x)/3-8 = 5*x+12 // - 5*x+12
(28*x)/3-(5*x)-12-8 = 0
(28*x)/3-5*x-12-8 = 0
13/3*x-20 = 0 // + 20
13/3*x = 20 // : 13/3
x = 20/13/3
x = 60/13
x = 60/13
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