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x in (-oo:+oo)
(1/3)*(x-9) = (1/8)*(3*x-1) // - (1/8)*(3*x-1)
(1/3)*(x-9)-((1/8)*(3*x-1)) = 0
(1/3)*(x-9)+(-1/8)*(3*x-1) = 0
1/3*(x-9)-1/8*(3*x-1) = 0
1/3*(x-9)-1/8*(3*x-1) = 0
-1/24*x-23/8 = 0
-1/24*x-23/8 = 0
-1/24*x-23/8 = 0 // + 23/8
-1/24*x = 23/8 // : -1/24
x = 23/8/(-1/24)
x = -69
x = -69
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