1) 6 : 7/9 = 6 * 9/7 = 54/7 = 7 5/7
2) 16 : 4/11 = 16 * 11/4 = 4 * 11 = 44
3) 13 : 26/29 = 13 * 29/26 = 29/2 = 14 1/2
4) 7/9 : 5 = 7/9 * 1/5 = 7/45
5) 9/16 : 6 = 9/16 * 1/6 = (3*1)/(16*2) = 3/32
6) 1 5/9 : 1 8/27 = 14/9 : 35/27 = 14/9 * 27/35 = (2*3)/(1*5) = 6/5 = 1 1/5
7) 2 10/13 : 3 3/26 = 36/13 : 81/26 = 36/13 * 26/81 = (4*2)/(1*9) = 8/9
8) 2 4/7 : 1 1/35 = 18/7 : 36/35 = 18/7 * 35/36 = (1*5)/(1*2) = 5/2 = 2 1/2