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m in (-oo:+oo)
m/8 = 0.8 // - 0.8
m/8-0.8 = 0
1/8*m-0.8 = 0 // + 0.8
1/8*m = 0.8 // : 1/8
m = 0.8/1/8
m = 6.4
m = 6.4
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