Add 5/9 and 21/80
5/9 + 21/80 is 589/720.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 80 is 720
Next, find the equivalent fraction of both fractional numbers with denominator 720 - For the 1st fraction, since 9 × 80 = 720,
5/9 = 5 × 80/9 × 80 = 400/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
21/80 = 21 × 9/80 × 9 = 189/720 - Add the two like fractions:
400/720 + 189/720 = 400 + 189/720 = 589/720 - So, 5/9 + 21/80 = 589/720
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/9+21/80 5/9+42/80 5/18+21/80 15/9+21/80 5/9+63/80 5/27+21/80 25/9+21/80 5/45+21/80 35/9+21/80 5/63+21/80