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(x-2)/3 = (x+10)/7 // - (x+10)/7
(x-2)/3-((x+10)/7) = 0
(x-2)/3+(-1*(x+10))/7 = 0
(7*(x-2))/(3*7)+(-1*3*(x+10))/(3*7) = 0
7*(x-2)-1*3*(x+10) = 0
4*x-44 = 0
(4*x-44)/(3*7) = 0
(4*x-44)/(3*7) = 0 // * 3*7
4*x-44 = 0
4*x-44 = 0 // + 44
4*x = 44 // : 4
x = 44/4
x = 11
x = 11
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