Question

Qual é o M.M.C. de 15-20-30

Answer 1

15, 20, 30 | 2
15, 10, 15 | 2
15, 5, 15 | 3
5, 5, 5 | 5
1, 1, 1 = 2 . 2 . 3 . 5 = 60 .

MMC de 15, 20 e 30 é 60 .

Answer 2

Temos que,

$15=3\times5$

$20=2^2\times5$

$30=2\times3\times6$

Logo, $mmc(15, 20, 30)=2^2\times3\times5=60$.