Question

qual o mmc de 30,45,60

Answer 1

30, 45, 60 | 2
15, 45, 30 | 2
15, 45, 15 | 3
  5, 15,   3 | 3
  5,   5,   1 | 5
  1,   1,   1           mmc(30,45,60) = 2 x 2 x 3 x 3 x 5 = 180

Answer 2

30 | 2
15 | 3
5 | 5
1 | 2.3.5 = 30

45 | 3
15 | 3
5 | 5
1 | 3.3.5 = 45

60 | 2
30 | 2
15 | 3
5 | 5
1 | 2.2.3.5 = 60