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x in (-oo:+oo)
4/3 = 8*x // - 8*x
4/3-(8*x) = 0
4/3-8*x = 0
4/3-8*x = 0 // - 4/3
-8*x = -4/3 // : -8
x = -4/3/(-8)
x = 1/6
x = 1/6
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