1. 6
7
4
5
7
8
8
9
7
12

2. 5
8
6
12+ = n

4. 5
8
6
12+ = n
8 12
4 6
2
2
2 3

5. 5
8
6
12+ = n
5
8
15
24
6
12
12
24

6. 5
8 24
=
6
12 24
=

7. 5
8
6
12+ = n15
24
5
8 =
15
24
12
24
+ = n
15
24
12
24
+ =
27
24
12
24
6
12=

9. =

10. 7
10
4
5+ = n
3
4
5
6+ = n
8
9
2
3+ = n