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x in (-oo:+oo)
2/3-(4*x) = 8 // - 8
2/3-(4*x)-8 = 0
2/3-4*x-8 = 0
-4*x-22/3 = 0 // + 22/3
-4*x = 22/3 // : -4
x = 22/3/(-4)
x = -11/6
x = -11/6
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