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x in (-oo:+oo)
2*x-(11/9) = 4*x-(15/15) // - 4*x-(15/15)
2*x-(4*x)-(11/9)+15/15 = 0
2*x-4*x-11/9+15/15 = 0
-2*x-2/9 = 0 // + 2/9
-2*x = 2/9 // : -2
x = 2/9/(-2)
x = -1/9
x = -1/9
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