Subtract 6/56 from 20/81
20/81 - 6/56 is 317/2268.
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,
20/81 = 20 × 56/81 × 56 = 1120/4536 - Likewise, for the 2nd fraction, since 56 × 81 = 4536,
6/56 = 6 × 81/56 × 81 = 486/4536 - Subtract the two like fractions:
1120/4536 - 486/4536 = 1120 - 486/4536 = 634/4536 - After reducing the fraction, the answer is 317/2268
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/81-6/56 20/81-12/56 60/81-6/56 20/81-18/56 20/81-30/56 20/81-42/56