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m in (-oo:+oo)
(m-23)/6-((2*m-16)/5)-1 = 0
(m-23)/6+(-1*(2*m-16))/5-1 = 0
(5*(m-23))/(5*6)+(-1*6*(2*m-16))/(5*6)+(-1*5*6)/(5*6) = 0
5*(m-23)-1*6*(2*m-16)-1*5*6 = 0
-7*m-30-19 = 0
-7*m-49 = 0
(-7*m-49)/(5*6) = 0
(-7*m-49)/(5*6) = 0 // * 5*6
-7*m-49 = 0
-7*m-49 = 0 // + 49
-7*m = 49 // : -7
m = 49/(-7)
m = -7
m = -7
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