Question

qual o mmc e 30'45 e 75

Answer 1

30, 45, 75 | ÷2
15,  45, 75 | ÷3
  5,  15, 25 | ÷3
  5,   5, 25 | ÷5
  1,     1,   5 | ÷5
  1,      1,   1 /  2.3.3.5.5 = 450.

Logo, mmc (30,45,75) = 450.