Subtract 15/56 from 56/81
56/81 - 15/56 is 1921/4536.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 56 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 81 × 56 = 4536,
56/81 = 56 × 56/81 × 56 = 3136/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
15/56 = 15 × 81/56 × 81 = 1215/4536 - Subtract the two like fractions:
3136/4536 - 1215/4536 = 3136 - 1215/4536 = 1921/4536
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/81-30/56 56/81-45/56 56/81-75/56