Add 21/24 and 2/15
21/24 + 2/15 is 121/120.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
2/15 = 2 × 8/15 × 8 = 16/120 - Add the two like fractions:
105/120 + 16/120 = 105 + 16/120 = 121/120 - So, 21/24 + 2/15 = 121/120
In mixed form: 11/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/24+2/15 21/24+4/15 21/48+2/15 21/24+2/30 63/24+2/15 21/24+6/15 21/72+2/15 21/24+2/45 21/24+10/15 21/24+2/75 21/24+14/15