Add 3/20 and 21/24
3/20 + 21/24 is 41/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
3/20 = 3 × 6/20 × 6 = 18/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
21/24 = 21 × 5/24 × 5 = 105/120 - Add the two like fractions:
18/120 + 105/120 = 18 + 105/120 = 123/120 - 123/120 simplified gives 41/40
- So, 3/20 + 21/24 = 41/40
In mixed form: 11/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20+21/24 3/20+42/24 3/40+21/24 3/20+21/48 9/20+21/24 3/20+63/24 3/60+21/24 3/20+21/72 15/20+21/24 21/20+21/24