It is: 1/5+3/7 = 22/35
One fifth plus one fifth is two fifths (2/5).
24/35
Well, a fifth is one fifth of one, that's why it's called a fifth, it's divided into five. If your question was 'what is a fifth a tenth of?', then the answer would be two. What is a fifth a seventh of? 1.4, etc.
6/35
The viola is one-seventh in size of the violin, and the violin is one-fifth higher in pitch.
Six thirty-fifths. One fifth is 7/35, one seventh is 5/35, so half way between is 6/35.
fifth
one third plus one fifth is eight fifteenth
0.05714285714 or 2/35.
111/5
One fifth PLUS two fifths = 3 fifths