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x in (-oo:+oo)
2*x-(5*x) = 11/3 // - 11/3
2*x-(5*x)-(11/3) = 0
2*x-5*x-11/3 = 0
-3*x-11/3 = 0 // + 11/3
-3*x = 11/3 // : -3
x = 11/3/(-3)
x = -11/9
x = -11/9
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