Question

Qual mmc de
10,20
12.9
15,5,10
me ajudem por favor

Answer 1

10-20|2
  5-10|2
  5- 5|5
  1- 1 ___________________
           2² * 5 = 20

12-9|2
  6-9|2
  3-9|3
  1- 3|3
   1 -1___________________
          2² * 3² =  36

15-5-10|2
15-5-  5|3
  5-5- 5 |5
  1- 1- 1__________________
                2 * 3 * 5 = 30

Answer 2

10, 20/2
5,10/2
5,5/5
1,1
2x2x5=20

12,9/2
6,9/2
3,9/3
1,3/3
1,1
2x2x3x3=36

15,5,10/2
15,5,5/3
5,5,5/5
1,1,1
2x3x5=30