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m in (-oo:+oo)
(2*m)/5+4 = -10/9-3 // + -10/9-3
(2*m)/5-(-10/9)+3+4 = 0
(2*m)/5+10/9+3+4 = 0
2/5*m+73/9 = 0 // - 73/9
2/5*m = -73/9 // : 2/5
m = -73/9/2/5
m = -365/18
m = -365/18
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