18/35 + 13/42 = 1211/1470 or 173/210
18 + 42 = 60
15/42 + 7/42 = 22/42 = 11/21
42 + 24 + 18 = 84
6/7 + 1/6 = 36/42 + 7/42 = 43/42 = 11/42
18/35 + 13/42 = 108/210 + 65/210 = 173/210
64 plus 18 plus 42 plus 48 plus 37 = 209
60
9 + 22 + 11 = 42
11:42 plus 45 minutes is 12:27
11/42 = 26.19%
18/42 = 3/7