Subtract 21/20 from 1/24
1st number: 1/24, 2nd number: 1 1/20
1/24 - 21/20 is -121/120.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 20 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
1/24 = 1 × 5/24 × 5 = 5/120 - Likewise, for the 2nd fraction, since 20 × 6 = 120,
21/20 = 21 × 6/20 × 6 = 126/120 - Subtract the two like fractions:
5/120 - 126/120 = 5 - 126/120 = -121/120
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/24-21/20 1/24-42/20 1/48-21/20 1/24-21/40 3/24-21/20 1/24-63/20 1/72-21/20 1/24-21/60 5/24-21/20 7/24-21/20