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x in (-oo:+oo)
x-((9*x^1)/2)+14 = 0
x+(-9/2)*x+14 = 0
14-7/2*x = 0 // - 14
-7/2*x = -14 // : -7/2
x = -14/(-7/2)
x = 4
x = 4
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