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x in (-oo:+oo)
(3/4)*x-8 = (7/8)*x // - (7/8)*x
(3/4)*x-((7/8)*x)-8 = 0
(3/4)*x+(-7/8)*x-8 = 0
-1/8*x-8 = 0 // + 8
-1/8*x = 8 // : -1/8
x = 8/(-1/8)
x = -64
x = -64
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