Add 35/9 and 21/7
1st number: 3 8/9, 2nd number: 3 0/7
35/9 + 21/7 is 62/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 7 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
35/9 = 35 × 7/9 × 7 = 245/63 - Likewise, for the 2nd fraction, since 7 × 9 = 63,
21/7 = 21 × 9/7 × 9 = 189/63 - Add the two like fractions:
245/63 + 189/63 = 245 + 189/63 = 434/63 - 434/63 simplified gives 62/9
- So, 35/9 + 21/7 = 62/9
In mixed form: 68/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/9+21/7 35/9+42/7 35/18+21/7 35/9+21/14 35/9+63/7 35/27+21/7 35/45+21/7 35/9+21/35 35/63+21/7 35/9+21/49