There is a circle that is cut in three slices one slice is (in fractions) 1/3 and one slice is 1/5. What fraction is the other slice. (it is a whole circle.)

Question

Can you please tell me how to I can figure this out on my own.

Answer 1

1/3 + 1/5
= 5/15 + 3/15
= 8/15

wouldn't that leave 7/15 for the third slice ?

Answer 2

But how did you figure it out like that.

Answer 3

1/2 + 1/5 = 8/15, (see above)

the whole circle is 1 or 15/15

15/15 - 8/15 = 7/15