Add 4/9 and 27/21
1st number: 4/9, 2nd number: 1 6/21
4/9 + 27/21 is 109/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 21 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 9 × 7 = 63,
4/9 = 4 × 7/9 × 7 = 28/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
27/21 = 27 × 3/21 × 3 = 81/63 - Add the two like fractions:
28/63 + 81/63 = 28 + 81/63 = 109/63 - So, 4/9 + 27/21 = 109/63
In mixed form: 146/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9+27/21 4/9+54/21 4/18+27/21 4/9+27/42 12/9+27/21 4/9+81/21 4/27+27/21 4/9+27/63 20/9+27/21 4/45+27/21 28/9+27/21 4/63+27/21