Question

Determine o mmc entre (21,35,84)

Answer 1

21,35.84:3  
7,35,28:7
1,5,4:2
1,5,2:2
1,5,1:5
1,1,1
3*7*2*2*5=420 

Answer 2

21,35,84|2
21,35,42|2
21,35,21|3
07,35,07|5
07,07,07|7
01,01,01

2*2*3*5*7=420
MMC = 420, quatrocentos e vinte.
Bons estudos!
Espero ter ajudado!