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x in (-oo:+oo)
7/9-2*x = 3*x+37/9 // - 3*x+37/9
7/9-2*x-(3*x)-(37/9) = 0
7/9-2*x-3*x-37/9 = 0
-5*x-10/3 = 0 // + 10/3
-5*x = 10/3 // : -5
x = 10/3/(-5)
x = -2/3
x = -2/3
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