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n in (-oo:+oo)
n/8 = (3/8)/1 // - (3/8)/1
n/8-((3/8)/1) = 0
n/8-3/8 = 0
1/8*n-3/8 = 0 // + 3/8
1/8*n = 3/8 // : 1/8
n = 3/8/1/8
n = 3
n = 3
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