Subtract 27/24 from 15/20
1st number: 15/20, 2nd number: 1 3/24
15/20 - 27/24 is -3/8.
Steps for subtracting 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,
15/20 = 15 × 6/20 × 6 = 90/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
27/24 = 27 × 5/24 × 5 = 135/120 - Subtract the two like fractions:
90/120 - 135/120 = 90 - 135/120 = -45/120 - After reducing the fraction, the answer is -3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/20-27/24 15/20-54/24 15/40-27/24 15/20-27/48 45/20-27/24 15/20-81/24 15/60-27/24 15/20-27/72 75/20-27/24