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m in (-oo:+oo)
119/6-m = -(4*(2*m+2/3))-2*m // + -(4*(2*m+2/3))-2*m
4*(2*m+2/3)-m-(-2*m)+119/6 = 0
4*(2*m+2/3)-m+2*m+119/6 = 0
(4*6*(2*m+2/3))/6+(6*(-m))/6+(2*6*m)/6+119/6 = 0
4*6*(2*m+2/3)+6*(-m)+2*6*m+119 = 0
42*m+12*m+16+119 = 0
54*m+16+119 = 0
54*m+135 = 0
(54*m+135)/6 = 0
(54*m+135)/6 = 0 // * 6
54*m+135 = 0
54*m+135 = 0 // - 135
54*m = -135 // : 54
m = -135/54
m = -5/2
m = -5/2
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