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x in (-oo:+oo)
-2*x-(2/3) = x+79/3 // - x+79/3
-2*x-x-(2/3)-(79/3) = 0
-2*x-x-2/3-79/3 = 0
-3*x-27 = 0 // + 27
-3*x = 27 // : -3
x = 27/(-3)
x = -9
x = -9
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