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m in (-oo:+oo)
m/6 = 4/8 // - 4/8
m/6-(4/8) = 0
m/6-1/2 = 0
1/6*m-1/2 = 0 // + 1/2
1/6*m = 1/2 // : 1/6
m = 1/2/1/6
m = 3
m = 3
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