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n in (-oo:+oo)
n/18 = 12.6 // - 12.6
n/18-12.6 = 0
1/18*n-12.6 = 0 // + 12.6
1/18*n = 12.6 // : 1/18
n = 12.6/1/18
n = 226.79998186
n = 226.79998186
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