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m in (-oo:+oo)
(51/4)*(2*m+1) = 6*m+1761/4 // - 6*m+1761/4
(51/4)*(2*m+1)-(6*m)-(1761/4) = 0
(51/4)*(2*m+1)-6*m-1761/4 = 0
51/4*(2*m+1)-6*m-1761/4 = 0
(4*51/4*(2*m+1))/4+(-6*4*m)/4-1761/4 = 0
4*51/4*(2*m+1)-6*4*m-1761 = 0
78*m-1761+51 = 0
78*m-1710 = 0
(78*m-1710)/4 = 0
(78*m-1710)/4 = 0 // * 4
78*m-1710 = 0
78*m-1710 = 0 // + 1710
78*m = 1710 // : 78
m = 1710/78
m = 285/13
m = 285/13
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