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(3*m-6)/2+M/5 = 2*m-6 // - 2*m-6
(3*m-6)/2+M/5-(2*m)+6 = 0
(3*m-6)/2+M/5-2*m+6 = 0
(5*(3*m-6))/(2*5)+(2*M)/(2*5)+(-2*2*5*m)/(2*5)+(2*5*6)/(2*5) = 0
5*(3*m-6)+2*M-2*2*5*m+2*5*6 = 0
2*M+15*m-20*m-30+60 = 0
2*M-5*m-30+60 = 0
2*M-5*m+30 = 0
(2*M-5*m+30)/(2*5) = 0
(2*M-5*m+30)/(2*5) = 0 // * 2*5
2*M-5*m+30 = 0
x belongs to the empty set
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