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(2*n)/5 = (1/3)*(2*m-12) // - (1/3)*(2*m-12)
(2*n)/5-((1/3)*(2*m-12)) = 0
(-1/3)*(2*m-12)+(2*n)/5 = 0
(2*n)/5-1/3*(2*m-12) = 0
(-1/3*5*(2*m-12))/5+(2*n)/5 = 0
2*n-1/3*5*(2*m-12) = 0
2*n-10/3*m+20 = 0
(2*n-10/3*m+20)/5 = 0
(2*n-10/3*m+20)/5 = 0 // * 5
2*n-10/3*m+20 = 0
x belongs to the empty set
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