Resposta:
[tex]\textsf{Segue a resposta abaixo}[/tex]
Explicação passo-a-passo:
[tex] \begin{array}{r|l}\sf3~~12~~5&\sf2\\\sf3~~6~~5&\sf2\\\sf3~~3~~5&\sf3\\\sf1~~1~~5&\sf5\\\sf1~~1~~1&\!\!\!\overline{~\:\sf2\cdot2\cdot3\cdot5=60~}\end{array}[/tex]
[tex] \boxed{\boxed{\mathsf{MMC\big(\,3~~12~~5\,\big)=60}} }[/tex]
