Subtract 28/24 from 15/30
1st number: 15/30, 2nd number: 1 4/24
15/30 - 28/24 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
15/30 = 15 × 4/30 × 4 = 60/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
28/24 = 28 × 5/24 × 5 = 140/120 - Subtract the two like fractions:
60/120 - 140/120 = 60 - 140/120 = -80/120 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/30-56/24 15/60-28/24 15/30-28/48 45/30-28/24 15/30-84/24 15/90-28/24 15/30-28/72 75/30-28/24