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(3*x-1)/2-8 = (x+3)/5 // - (x+3)/5
(3*x-1)/2-((x+3)/5)-8 = 0
(3*x-1)/2+(-1*(x+3))/5-8 = 0
(5*(3*x-1))/(2*5)+(-1*2*(x+3))/(2*5)+(-8*2*5)/(2*5) = 0
5*(3*x-1)-1*2*(x+3)-8*2*5 = 0
13*x-80-11 = 0
13*x-91 = 0
(13*x-91)/(2*5) = 0
(13*x-91)/(2*5) = 0 // * 2*5
13*x-91 = 0
13*x-91 = 0 // + 91
13*x = 91 // : 13
x = 91/13
x = 7
x = 7
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