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m in (-oo:+oo)
6*m+(4/7)*m-(1/10) = 54/35 // - 54/35
6*m+(4/7)*m-(1/10)-(54/35) = 0
6*m+(4/7)*m-1/10-54/35 = 0
46/7*m-23/14 = 0 // + 23/14
46/7*m = 23/14 // : 46/7
m = 23/14/46/7
m = 1/4
m = 1/4
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