15 + 6 - 1 = 20
6 hours 15 minutes.
It is: 6 hours and 15 minutes
8/15 − 1/6 = 33/90 or 11/30
If those are fractions, 6/15 - 1/15 = 5/15 = 1/3 If those are expressions of time, 6:15 - 1:15 = 5 hours If they are something else, please write them out.
The answer is: 6 hours and 15 minutes
I work it out like this: (-2/15) - (-1/9) = (-2/15) + (1/9) ) [minus negative is the same as plus] = (-6/45)+(5/45) [change both to 45th as that is the lowest common multiple of 15 and 9] =-1/45 or negative1/45
13/15.
15 + 6 - 1 = 20
6 hours 15 minutes.
It is: 6 hours and 15 minutes
59/90 - 1/69 = 59/90 - 15/90 = 44/90 = 22/45.
2 - 1/6 = 15/6
2/3 minus 6/10 = 1/15
1, 2, 3, 6 1, 3, 5, 9, 15, 45
1, 2, 3, 6 1, 3, 5, 9, 15, 45
36 - 15 5/6= 35 6/6 - 15 5/6= 20 1/6