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x in (-oo:+oo)
-3 = x/8-2 // - x/8-2
2-(x/8)-3 = 0
-1/8*x-1 = 0 // + 1
-1/8*x = 1 // : -1/8
x = 1/(-1/8)
x = -8
x = -8
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