Add 6/9 and 21/80
6/9 + 21/80 is 223/240.
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,
6/9 = 6 × 80/9 × 80 = 480/720 - Likewise, for the 2nd fraction, since 80 × 9 = 720,
21/80 = 21 × 9/80 × 9 = 189/720 - Add the two like fractions:
480/720 + 189/720 = 480 + 189/720 = 669/720 - 669/720 simplified gives 223/240
- So, 6/9 + 21/80 = 223/240
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/9+21/80 6/9+42/80 6/18+21/80 18/9+21/80 6/9+63/80 6/27+21/80 30/9+21/80 6/45+21/80 42/9+21/80 6/63+21/80