Add 5/56 and 40/81
5/56 + 40/81 is 2645/4536.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 81 is 4536
Next, find the equivalent fraction of both fractional numbers with denominator 4536 - For the 1st fraction, since 56 × 81 = 4536,
5/56 = 5 × 81/56 × 81 = 405/4536 - Likewise, for the 2nd fraction, since 81 × 56 = 4536,
40/81 = 40 × 56/81 × 56 = 2240/4536 - Add the two like fractions:
405/4536 + 2240/4536 = 405 + 2240/4536 = 2645/4536 - So, 5/56 + 40/81 = 2645/4536
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/56+40/81 5/56+80/81 15/56+40/81 25/56+40/81 35/56+40/81