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n in (-oo:+oo)
n/6 = 16/12 // - 16/12
n/6-(16/12) = 0
n/6-4/3 = 0
1/6*n-4/3 = 0 // + 4/3
1/6*n = 4/3 // : 1/6
n = 4/3/1/6
n = 8
n = 8
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