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7/4 = (3*x-8)/5 // - (3*x-8)/5
7/4-((3*x-8)/5) = 0
(-1*(3*x-8))/5+7/4 = 0
(-1*4*(3*x-8))/(4*5)+(5*7)/(4*5) = 0
5*7-1*4*(3*x-8) = 0
67-12*x = 0
(67-12*x)/(4*5) = 0
(67-12*x)/(4*5) = 0 // * 4*5
67-12*x = 0
67-12*x = 0 // - 67
-12*x = -67 // : -12
x = -67/(-12)
x = 67/12
x = 67/12
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