Subtract 15/20 from 24/28
24/28 - 15/20 is 3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
24/28 = 24 × 5/28 × 5 = 120/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
15/20 = 15 × 7/20 × 7 = 105/140 - Subtract the two like fractions:
120/140 - 105/140 = 120 - 105/140 = 15/140 - After reducing the fraction, the answer is 3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 48/28-15/20 24/28-30/20 24/56-15/20 24/28-15/40 72/28-15/20 24/28-45/20 24/84-15/20 24/28-15/60 24/28-75/20