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m in (-oo:+oo)
(3/4)*(8*m+12)-(2*m) = 25 // - 25
(3/4)*(8*m+12)-(2*m)-25 = 0
(3/4)*(8*m+12)-2*m-25 = 0
3/4*(8*m+12)-2*m-25 = 0
3/4*(8*m+12)-2*m-25 = 0
4*m-25+9 = 0
4*m-16 = 0
4*m-16 = 0
4*m-16 = 0 // + 16
4*m = 16 // : 4
m = 16/4
m = 4
m = 4
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