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m in (-oo:+oo)
(3/4)*m-10 = (-1/3)*m-(493/48) // - (-1/3)*m-(493/48)
(3/4)*m-((-1/3)*m)+493/48-10 = 0
(3/4)*m+(1/3)*m+493/48-10 = 0
13/12*m+13/48 = 0 // - 13/48
13/12*m = -13/48 // : 13/12
m = -13/48/13/12
m = -1/4
m = -1/4
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