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n in (-oo:+oo)
n/0.24 = 1.4/0.84 // - 1.4/0.84
n/0.24-(1.4/0.84) = 0
n/0.24-1.66666667 = 0
4.16666667*n-1.66666667 = 0 // + 1.66666667
4.16666667*n = 1.66666667 // : 4.16666667
n = 1.66666667/4.16666667
n = 0.4
n = 0.4
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