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x in (-oo:+oo)
(3*x)/2-((12-x)/5) = (7*x+1)/3 // - (7*x+1)/3
(3*x)/2-((12-x)/5)-((7*x+1)/3) = 0
(-1*(12-x))/5+(-1*(7*x+1))/3+(3*x)/2 = 0
(-1*2*3*(12-x))/(2*3*5)+(-1*2*5*(7*x+1))/(2*3*5)+(3*3*5*x)/(2*3*5) = 0
3*3*5*x-1*2*3*(12-x)-1*2*5*(7*x+1) = 0
45*x-64*x-82 = 0
-19*x-82 = 0
(-19*x-82)/(2*3*5) = 0
(-19*x-82)/(2*3*5) = 0 // * 2*3*5
-19*x-82 = 0
-19*x-82 = 0 // + 82
-19*x = 82 // : -19
x = 82/(-19)
x = -82/19
x = -82/19
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