Add 3/9 and 21/35
3/9 + 21/35 is 14/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 35 is 315
Next, find the equivalent fraction of both fractional numbers with denominator 315 - For the 1st fraction, since 9 × 35 = 315,
3/9 = 3 × 35/9 × 35 = 105/315 - Likewise, for the 2nd fraction, since 35 × 9 = 315,
21/35 = 21 × 9/35 × 9 = 189/315 - Add the two like fractions:
105/315 + 189/315 = 105 + 189/315 = 294/315 - 294/315 simplified gives 14/15
- So, 3/9 + 21/35 = 14/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9+21/35 3/9+42/35 3/18+21/35 3/9+21/70 3/9+63/35 3/27+21/35 15/9+21/35 3/45+21/35 21/9+21/35 3/63+21/35