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n in (-oo:+oo)
2/9-((1/3)*n)-n = 106/99 // - 106/99
2/9-((1/3)*n)-n-(106/99) = 0
(-1/3)*n-n+2/9-106/99 = 0
-4/3*n-28/33 = 0 // + 28/33
-4/3*n = 28/33 // : -4/3
n = 28/33/(-4/3)
n = -7/11
n = -7/11
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