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x in (-oo:+oo)
2*x-(5*x)+9 = 34/3 // - 34/3
2*x-(5*x)-(34/3)+9 = 0
2*x-5*x-34/3+9 = 0
-3*x-7/3 = 0 // + 7/3
-3*x = 7/3 // : -3
x = 7/3/(-3)
x = -7/9
x = -7/9
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