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x in (-oo:+oo)
(8/7)*x = 1/12 // - 1/12
(8/7)*x-(1/12) = 0
(8/7)*x-1/12 = 0
8/7*x-1/12 = 0 // + 1/12
8/7*x = 1/12 // : 8/7
x = 1/12/8/7
x = 7/96
x = 7/96
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