Subtract 81/10 from 15/56
1st number: 15/56, 2nd number: 8 1/10
15/56 - 81/10 is -2193/280.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 10 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
15/56 = 15 × 5/56 × 5 = 75/280 - Likewise, for the 2nd fraction, since 10 × 28 = 280,
81/10 = 81 × 28/10 × 28 = 2268/280 - Subtract the two like fractions:
75/280 - 2268/280 = 75 - 2268/280 = -2193/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/56-81/10 15/56-81/20 45/56-81/10 15/56-81/30 75/56-81/10 15/56-81/50 15/56-81/70