Add 5/9 and 8/21
5/9 + 8/21 is 59/63.
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,
5/9 = 5 × 7/9 × 7 = 35/63 - Likewise, for the 2nd fraction, since 21 × 3 = 63,
8/21 = 8 × 3/21 × 3 = 24/63 - Add the two like fractions:
35/63 + 24/63 = 35 + 24/63 = 59/63 - So, 5/9 + 8/21 = 59/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9+8/21 5/9+16/21 5/18+8/21 5/9+8/42 15/9+8/21 5/9+24/21 5/27+8/21 5/9+8/63 25/9+8/21 5/9+40/21 5/45+8/21 35/9+8/21 5/9+56/21 5/63+8/21