Add 15/24 and 21/27
15/24 + 21/27 is 101/72.
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,
15/24 = 15 × 9/24 × 9 = 135/216 - Likewise, for the 2nd fraction, since 27 × 8 = 216,
21/27 = 21 × 8/27 × 8 = 168/216 - Add the two like fractions:
135/216 + 168/216 = 135 + 168/216 = 303/216 - 303/216 simplified gives 101/72
- So, 15/24 + 21/27 = 101/72
In mixed form: 129/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/24+21/27 15/24+42/27 15/48+21/27 15/24+21/54 45/24+21/27 15/24+63/27 15/72+21/27 15/24+21/81 75/24+21/27