Subtract 2/81 from 56/40
1st number: 1 16/40, 2nd number: 2/81
56/40 - 2/81 is 557/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 81 is 3240
Next, find the equivalent fraction of both fractional numbers with denominator 3240 - For the 1st fraction, since 40 × 81 = 3240,
56/40 = 56 × 81/40 × 81 = 4536/3240 - Likewise, for the 2nd fraction, since 81 × 40 = 3240,
2/81 = 2 × 40/81 × 40 = 80/3240 - Subtract the two like fractions:
4536/3240 - 80/3240 = 4536 - 80/3240 = 4456/3240 - After reducing the fraction, the answer is 557/405
- In mixed form: 1152/405
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/40-4/81 56/80-2/81 56/40-6/81 56/40-10/81 56/40-14/81