1. 2x15 = 30
7x15 = 105
7/2 = 105/30
5x6 = 30
6x6 =36
6/5 = 36/30
3x10 = 30
4x10 = 40
4/3 = 40/30
8/30
15x2 =30
9x2 = 18
9/15 = 18/30
2. 4x9= 36
5x9 = 45
5/4 = 45/36
3x12 = 36
2x12 = 24
2/3 = 24/12
18x2 = 36
7x2 = 14
7/18 = 14/36
9x4 = 36
11x4=44
11/9 = 44/36
12x3 = 36
6x3=18
6/12 = 18/36