Question

qual o m.m.c (6,10)   m.m.c (10,12,45) m.m.c (10,12,5)

Answer 1

mmc de 6,10=225  mmc de 10 12 e 45 é 900 e o mmc de 10 12 e 5 é 300

Answer 2

6, 10 |  2
  3, 5 |  3
  1, 5 |_5___________
  1, 1 | 2 × 3 × 5 = 30

10, 12, 45 |  2
    5, 6, 45 |  2
    5, 3, 45 |  3
    5, 1, 15 |  3
      5, 1, 5 |_5___________________________
      1, 1, 1 | 2² × 3² × 5 = 4 × 9 × 5 = 180

10, 12, 5 |  2
    5, 6, 5 |  2 
    5, 3, 5 |  3
    5, 1, 5 |_5_______________________
    1, 1, 1 | 2² × 3 × 5 = 4 × 3 × 5 = 60

Espero ter ajudado. Valeu!