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m in (-oo:+oo)
(2/3)*m-((1/2)*(m-4)) = 3 // - 3
(2/3)*m-((1/2)*(m-4))-3 = 0
(-1/2)*(m-4)+(2/3)*m-3 = 0
(2*m)/3-1/2*(m-4)-3 = 0
(-1/2*3*(m-4))/3+(2*m)/3+(-3*3)/3 = 0
2*m-1/2*3*(m-4)-3*3 = 0
1/2*m-9+6 = 0
1/2*m-3 = 0
(1/2*m-3)/3 = 0
(1/2*m-3)/3 = 0 // * 3
1/2*m-3 = 0
1/2*m-3 = 0 // + 3
1/2*m = 3 // : 1/2
m = 3/1/2
m = 6
m = 6
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