Question

eu to com uma dúvida de m.m.c de 15,20

Answer 1

15, 20 | 2
15, 10 | 2
15, 5 | 3
5, 5 | 5
1, 1

MMC = 2.2.3.5 = 60

Answer 2

15, 20 | 2
15, 10 | 2
15, 5   | 3
 5, 5    | 5
 1, 1    | MMC: multiplica 2 . 2 . 3 . 5 = 60