One fifth plus one fifth is two fifths (2/5).
2/3
2 5/9 + 1 2/3 = 4 2/9 or four and two ninths.
1/5 + 1/5 = 2/5
2/18 + 5/18 = 7/18
One-third plus three-ninths is 2/3.7/9
2
6 and 7 ninths
6 ninths. That is two thirds: 2/3.
Eight ninths
It is: 15/9 or1 and 2/3
One fifth plus one fifth is two fifths (2/5).
5 and 2 thirds
2/3
2 5/9 + 1 2/3 = 4 2/9 or four and two ninths.
10 and 2/3.
6/9 or 2/3