Add 35/21 and 9/7
1st number: 1 14/21, 2nd number: 1 2/7
35/21 + 9/7 is 62/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 21 × 1 = 21,
35/21 = 35 × 1/21 × 1 = 35/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
9/7 = 9 × 3/7 × 3 = 27/21 - Add the two like fractions:
35/21 + 27/21 = 35 + 27/21 = 62/21 - So, 35/21 + 9/7 = 62/21
In mixed form: 220/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/21+9/7 35/21+18/7 35/42+9/7 35/21+9/14 35/21+27/7 35/63+9/7 35/21+9/21 35/21+45/7 35/21+9/35 35/21+63/7 35/21+9/49