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(2*x-5)/3 = x/4 // - x/4
(2*x-5)/3-(x/4) = 0
(2*x-5)/3-x/4 = 0
(4*(2*x-5))/(3*4)+(3*(-x))/(3*4) = 0
4*(2*x-5)+3*(-x) = 0
5*x-20 = 0
(5*x-20)/(3*4) = 0
(5*x-20)/(3*4) = 0 // * 3*4
5*x-20 = 0
5*x-20 = 0 // + 20
5*x = 20 // : 5
x = 20/5
x = 4
x = 4
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