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x in (-oo:+oo)
8-4*x = 6*x+88 // - 6*x+88
8-4*x-(6*x)-88 = 0
8-4*x-6*x-88 = 0
-10*x-80 = 0 // + 80
-10*x = 80 // : -10
x = 80/(-10)
x = -8
x = -8
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