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n in (-oo:+oo)
-(3*n)-8/9 = -331/99 // + -331/99
-(3*n)-8/9-(-331/99) = 0
331/99-3*n-8/9 = 0
27/11-3*n = 0 // - 27/11
-3*n = -27/11 // : -3
n = -27/11/(-3)
n = 9/11
n = 9/11
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