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(5*(x-4))/3 = 60/9 // - 60/9
(5*(x-4))/3-(60/9) = 0
(5*(x-4))/3-20/3 = 0
5*(x-4)-20 = 0
5*x-40 = 0
(5*x-40)/3 = 0
(5*x-40)/3 = 0 // * 3
5*x-40 = 0
5*x-40 = 0 // + 40
5*x = 40 // : 5
x = 40/5
x = 8
x = 8
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