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(7*(x+3))/10+2*x+3*x-(1/3)+4/4 = 0
(7*(x+3))/10+2*x+3*x-1/3+4/4 = 0
(7*(x+3))/10+2*x+3*x-1/3+1 = 0
(3*7*(x+3))/(3*10)+(2*3*10*x)/(3*10)+(3*3*10*x)/(3*10)+(-1*10)/(3*10)+(1*3*10)/(3*10) = 0
3*7*(x+3)+2*3*10*x+3*3*10*x-1*10+1*3*10 = 0
81*x+90*x-10+30+63 = 0
171*x-10+30+63 = 0
171*x+30+53 = 0
171*x+83 = 0
(171*x+83)/(3*10) = 0
(171*x+83)/(3*10) = 0 // * 3*10
171*x+83 = 0
171*x+83 = 0 // - 83
171*x = -83 // : 171
x = -83/171
x = -83/171
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