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x in (-oo:+oo)
(1/8)*x-(2/3) = 5/6 // - 5/6
(1/8)*x-(2/3)-(5/6) = 0
(1/8)*x-2/3-5/6 = 0
1/8*x-3/2 = 0 // + 3/2
1/8*x = 3/2 // : 1/8
x = 3/2/1/8
x = 12
x = 12
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