Subtract 81/72 from 56/5
1st number: 11 1/5, 2nd number: 1 9/72
56/5 - 81/72 is 403/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 72 is 360
Next, find the equivalent fraction of both fractional numbers with denominator 360 - For the 1st fraction, since 5 × 72 = 360,
56/5 = 56 × 72/5 × 72 = 4032/360 - Likewise, for the 2nd fraction, since 72 × 5 = 360,
81/72 = 81 × 5/72 × 5 = 405/360 - Subtract the two like fractions:
4032/360 - 405/360 = 4032 - 405/360 = 3627/360 - After reducing the fraction, the answer is 403/40
- In mixed form: 103/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/10-81/72 56/15-81/72 56/25-81/72 56/35-81/72