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(4*x-8)/3+(8*x-4)/5 = 20 // - 20
(4*x-8)/3+(8*x-4)/5-20 = 0
(5*(4*x-8))/(3*5)+(3*(8*x-4))/(3*5)+(-20*3*5)/(3*5) = 0
5*(4*x-8)+3*(8*x-4)-20*3*5 = 0
44*x-300-52 = 0
44*x-352 = 0
(44*x-352)/(3*5) = 0
(44*x-352)/(3*5) = 0 // * 3*5
44*x-352 = 0
44*x-352 = 0 // + 352
44*x = 352 // : 44
x = 352/44
x = 8
x = 8
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