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(x+4)/10 = (x-2)/8 // - (x-2)/8
(x+4)/10-((x-2)/8) = 0
(x+4)/10+(-1*(x-2))/8 = 0
(8*(x+4))/(8*10)+(-1*10*(x-2))/(8*10) = 0
8*(x+4)-1*10*(x-2) = 0
52-2*x = 0
(52-2*x)/(8*10) = 0
(52-2*x)/(8*10) = 0 // * 8*10
52-2*x = 0
52-2*x = 0 // - 52
-2*x = -52 // : -2
x = -52/(-2)
x = 26
x = 26
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