Question

Qual é o mmc (15,24,40)

Answer 1

15, 24,40/ 3
5, 8, 40 /5
1, 8, 8 / 2
1, 4, 4 /4
1, 1, 1/ 
3x5x2x4=
 120

Answer 2

Basta fatorar:

15,24,40|2
15,12,20|2
15,6,10|2
15,3,5|3
5,1,5|5
1,1,1

$\boxed{\texttt{MMC=2.2.2.3.5=120}}$