0.525 or 21/40
4/7 + 1/3 = get common denominator 12/21 + 7/21 = 19/21 is your answer add
3 over 7 x 21 over 1 and 21 over 1 x 3 over 7
11/15
They add up to 21/22
1 7/12 (one and seven-twelfths)
21
1/7+1/3 first get common denominators 3/21+7/21 add the numerators 10/21
The sum of 6/7 and 1/3 is 1 4/21
The answer is three ones:1 + 1+ 1 =121 + 1 =21 + 2 =12^ ^
-1
The sum of 1/7 and 3/21 is 2/7