Add 81/56 and 2/5
1st number: 1 25/56, 2nd number: 2/5
81/56 + 2/5 is 517/280.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 5 is 280
Next, find the equivalent fraction of both fractional numbers with denominator 280 - For the 1st fraction, since 56 × 5 = 280,
81/56 = 81 × 5/56 × 5 = 405/280 - Likewise, for the 2nd fraction, since 5 × 56 = 280,
2/5 = 2 × 56/5 × 56 = 112/280 - Add the two like fractions:
405/280 + 112/280 = 405 + 112/280 = 517/280 - So, 81/56 + 2/5 = 517/280
In mixed form: 1237/280
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 81/56+4/5 81/56+2/10 81/56+6/5 81/56+2/15 81/56+10/5 81/56+2/25 81/56+14/5 81/56+2/35