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(1/5)*(x+2) = (1/4)*(x-8)+1 // - (1/4)*(x-8)+1
(1/5)*(x+2)-((1/4)*(x-8))-1 = 0
(1/5)*(x+2)+(-1/4)*(x-8)-1 = 0
1/5*(x+2)-1/4*(x-8)-1 = 0
1/5*(x+2)-1/4*(x-8)-1 = 0
12/5-1/20*x-1 = 0
7/5-1/20*x = 0
7/5-1/20*x = 0
7/5-1/20*x = 0 // - 7/5
-1/20*x = -7/5 // : -1/20
x = -7/5/(-1/20)
x = 28
x = 28
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