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x in (-oo:+oo)
x-(7/8) = 3*x+1/6 // - 3*x+1/6
x-(3*x)-(7/8)-(1/6) = 0
x-3*x-7/8-1/6 = 0
-2*x-25/24 = 0 // + 25/24
-2*x = 25/24 // : -2
x = 25/24/(-2)
x = -25/48
x = -25/48
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