Subtract 1/20 from 15/24
15/24 - 1/20 is 23/40.
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,
15/24 = 15 × 5/24 × 5 = 75/120 - Likewise, for the 2nd fraction, since 20 × 6 = 120,
1/20 = 1 × 6/20 × 6 = 6/120 - Subtract the two like fractions:
75/120 - 6/120 = 75 - 6/120 = 69/120 - After reducing the fraction, the answer is 23/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/24-1/20 15/24-2/20 15/48-1/20 15/24-1/40 45/24-1/20 15/24-3/20 15/72-1/20 15/24-1/60 75/24-1/20 15/24-5/20 15/24-7/20