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n in (-oo:+oo)
3*n = 17/3 // - 17/3
3*n-(17/3) = 0
3*n-17/3 = 0
3*n-17/3 = 0 // + 17/3
3*n = 17/3 // : 3
n = 17/3/3
n = 17/9
n = 17/9
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