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(5*x-5)/3-((10*x-7)/12) = (3*x-15)/4 // - (3*x-15)/4
(5*x-5)/3-((10*x-7)/12)-((3*x-15)/4) = 0
(5*x-5)/3+(-1*(10*x-7))/12+(-1*(3*x-15))/4 = 0
(4*12*(5*x-5))/(3*4*12)+(-1*3*4*(10*x-7))/(3*4*12)+(-1*3*12*(3*x-15))/(3*4*12) = 0
4*12*(5*x-5)-1*3*4*(10*x-7)-1*3*12*(3*x-15) = 0
120*x-108*x-156+540 = 0
12*x+384 = 0
(12*x+384)/(3*4*12) = 0
(12*x+384)/(3*4*12) = 0 // * 3*4*12
12*x+384 = 0
12*x+384 = 0 // - 384
12*x = -384 // : 12
x = -384/12
x = -32
x = -32
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