Răspuns :
54 | 2
27 | 3
9 | 3
3 | 3
1
63 | 3
21 | 3
7 | 7
1
72 | 3
24 | 2
12 | 2
6 | 2
3 | 3
1
54 = 2 × 3^3
63 = 3^2 × 7
72 = 2^3 × 3^2
cmmdc (54,63,72) = 3^2 = 9
27 | 3
9 | 3
3 | 3
1
63 | 3
21 | 3
7 | 7
1
72 | 3
24 | 2
12 | 2
6 | 2
3 | 3
1
54 = 2 × 3^3
63 = 3^2 × 7
72 = 2^3 × 3^2
cmmdc (54,63,72) = 3^2 = 9