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(2*x-7)/12-((4-x)/6) = 19/20 // - 19/20
(2*x-7)/12-((4-x)/6)-(19/20) = 0
(2*x-7)/12-((4-x)/6)-19/20 = 0
(2*x-7)/12+(-1*(4-x))/6-19/20 = 0
(6*20*(2*x-7))/(6*12*20)+(-1*12*20*(4-x))/(6*12*20)+(-19*6*12)/(6*12*20) = 0
6*20*(2*x-7)-1*12*20*(4-x)-19*6*12 = 0
480*x-1800-1368 = 0
480*x-3168 = 0
(480*x-3168)/(6*12*20) = 0
(480*x-3168)/(6*12*20) = 0 // * 6*12*20
480*x-3168 = 0
480*x-3168 = 0 // + 3168
480*x = 3168 // : 480
x = 3168/480
x = 33/5
x = 33/5
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