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(4*x-3)/2+(1*x-8)/10+7*x-3 = 72/5 // - 72/5
(4*x-3)/2+(1*x-8)/10+7*x-(72/5)-3 = 0
(4*x-3)/2+(x-8)/10+7*x-72/5-3 = 0
(5*10*(4*x-3))/(2*5*10)+(2*5*(x-8))/(2*5*10)+(2*5*7*10*x)/(2*5*10)+(-72*2*10)/(2*5*10)+(-3*2*5*10)/(2*5*10) = 0
5*10*(4*x-3)+2*5*(x-8)+2*5*7*10*x-72*2*10-3*2*5*10 = 0
210*x+700*x-1440-300-230 = 0
910*x-1440-300-230 = 0
910*x-1670-300 = 0
910*x-1970 = 0
(910*x-1970)/(2*5*10) = 0
(910*x-1970)/(2*5*10) = 0 // * 2*5*10
910*x-1970 = 0
910*x-1970 = 0 // + 1970
910*x = 1970 // : 910
x = 1970/910
x = 197/91
x = 197/91
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