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n in (-oo:+oo)
3*n-(1/3) = -((1/6)*n)-45/2 // + -((1/6)*n)-45/2
3*n+(1/6)*n-(1/3)-(-45/2) = 0
3*n+(1/6)*n-1/3+45/2 = 0
19/6*n+133/6 = 0 // - 133/6
19/6*n = -133/6 // : 19/6
n = -133/6/19/6
n = -7
n = -7
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