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m in (-oo:+oo)
(2*m-7)/3 = 25 // - 25
(2*m-7)/3-25 = 0
(2*m-7)/3+(-25*3)/3 = 0
2*m-25*3-7 = 0
2*m-82 = 0
(2*m-82)/3 = 0
(2*m-82)/3 = 0 // * 3
2*m-82 = 0
2*m-82 = 0 // + 82
2*m = 82 // : 2
m = 82/2
m = 41
m = 41
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