Question

Calcule M.d.c (20,30)

Answer 1

20 (2,4,5,10,20)
30(2,3,5,10,15,30)

mdc = 10

Answer 2

20,30/2  divisor comum
10,15/2
5,15/3 
5,5/5   divisor comum
1,1
2×5=10
Portanto é 10