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3*x-((1/2)*(X/5+6)) = (3*x)/2+25 // - (3*x)/2+25
3*x-((1/2)*(X/5+6))-((3*x)/2)-25 = 0
(-1/2)*(X/5+6)+3*x+(-3/2)*x-25 = 0
3*x-1/2*(1/5*X+6)+(-3*x)/2-25 = 0
(-1/2*2*(1/5*X+6))/2+(2*3*x)/2+(-3*x)/2+(-25*2)/2 = 0
2*3*x-1/2*2*(1/5*X+6)-3*x-25*2 = 0
6*x-1/5*X-3*x-50-6 = 0
3*x-1/5*X-50-6 = 0
3*x-1/5*X-56 = 0
(3*x-1/5*X-56)/2 = 0
(3*x-1/5*X-56)/2 = 0 // * 2
3*x-1/5*X-56 = 0
3*x-1/5*X-56 = 0 // + -1/5*X-56
3*x = -(-1/5*X-56) // : 3
x = (-(-1/5*X-56))/3
x = (56-(-1/5*X))/3
x = (56-(-1/5*X))/3
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