Subtract 28/15 from 25/24
1st number: 1 1/24, 2nd number: 1 13/15
25/24 - 28/15 is -33/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 15 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
25/24 = 25 × 5/24 × 5 = 125/120 - Likewise, for the 2nd fraction, since 15 × 8 = 120,
28/15 = 28 × 8/15 × 8 = 224/120 - Subtract the two like fractions:
125/120 - 224/120 = 125 - 224/120 = -99/120 - After reducing the fraction, the answer is -33/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/24-28/15 25/24-56/15 25/48-28/15 25/24-28/30 75/24-28/15 25/24-84/15 25/72-28/15 25/24-28/45 25/24-28/75