Question

qual o mmc de 21 18 15

Answer 1

$21,18,15|2\\21,9,15|3\\7,3,5|3\\7,1,5|5\\7,1,1|7\\\\2 * 3^{2} * 5 * 7\\9 * 7 * 10 = 630$

Answer 2

Olá!

21 18 15|2
21 9 15|3
7 3 5|3
7 1 5|5
7 1 1|7
1 1 1

2×3×3×5×7=630 MDC de (21,18,15)=630

Resposta:630

Espero ter ajudado! =)