Question

eu preciso pra agora quem sabe o m.m.c (9,12) e m.d.c (48,18,15)

Answer 1

mmc 
9,12/2
9,6/2
9,3/3              2² . 3² = 4 . 9 = 36 
3,1/3
1,1

mdc

48,18,15/2
24,9,15/2
12,9,15/2
6,9,15/2
3,9,15/3
1,3,5/3
1,1,5/5
1,1,1           mdc ( 48,18,15) = 3                      ok