Add 21/24 and 6/27
21/24 + 6/27 is 79/72.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 27 is 216
Next, find the equivalent fraction of both fractional numbers with denominator 216 - For the 1st fraction, since 24 × 9 = 216,
21/24 = 21 × 9/24 × 9 = 189/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
6/27 = 6 × 8/27 × 8 = 48/216 - Add the two like fractions:
189/216 + 48/216 = 189 + 48/216 = 237/216 - 237/216 simplified gives 79/72
- So, 21/24 + 6/27 = 79/72
In mixed form: 17/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+6/27 21/24+12/27 21/48+6/27 21/24+6/54 63/24+6/27 21/24+18/27 21/72+6/27 21/24+6/81 21/24+30/27 21/24+42/27