Add 21/20 and 20/24
1st number: 1 1/20, 2nd number: 20/24
21/20 + 20/24 is 113/60.
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,
21/20 = 21 × 6/20 × 6 = 126/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
20/24 = 20 × 5/24 × 5 = 100/120 - Add the two like fractions:
126/120 + 100/120 = 126 + 100/120 = 226/120 - 226/120 simplified gives 113/60
- So, 21/20 + 20/24 = 113/60
In mixed form: 153/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/20+20/24 21/20+40/24 21/40+20/24 21/20+20/48 63/20+20/24 21/20+60/24 21/60+20/24 21/20+20/72