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x in (-oo:+oo)
(1/12)*x-(1/4) = (7/6)*x+5/6 // - (7/6)*x+5/6
(1/12)*x-((7/6)*x)-(1/4)-(5/6) = 0
(1/12)*x+(-7/6)*x-1/4-5/6 = 0
-13/12*x-13/12 = 0 // + 13/12
-13/12*x = 13/12 // : -13/12
x = 13/12/(-13/12)
x = -1
x = -1
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