Verified answer

Resposta:  O mmc é 12

Explicação passo a passo:

mmc

3   6   12 | 2

3   3    6  | 2

3   3    3  | 3

1    1     1   |_______

                2*2*3=12

[tex]\large\boxed{\begin{array}{l}\sf mmc\,(3,6\,e\,12)=12\\\\\begin{array}{r|l}\sf3,6,12&\sf2\\\sf3,3,6&\sf2\\\sf3,3,3&\sf3\\\sf1,1,1&\overline{\sf2\cdot2\cdot3=12}\end{array}\end{array}}[/tex]