Sum in simplest form

Question

1/7+3/7+1/7

Answer 1

Since all fractions share the same denominator it's just a matter of adding up all the numerators:  1+3+1 = 5 and placing that numerator over 7..... 5/7

Answer 2

1/7 + 3/7 + 1/7

 

 

Since the denominators are all the same, we can just add the numerators.

5/7