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x in (-oo:+oo)
8/7 = (16/2)*x // - (16/2)*x
8/7-((16/2)*x) = 0
8/7-8*x = 0
8/7-8*x = 0 // - 8/7
-8*x = -8/7 // : -8
x = -8/7/(-8)
x = 1/7
x = 1/7
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