Add 5/7 and 7/81
5/7 + 7/81 is 454/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 81 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 7 × 81 = 567,
5/7 = 5 × 81/7 × 81 = 405/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
7/81 = 7 × 7/81 × 7 = 49/567 - Add the two like fractions:
405/567 + 49/567 = 405 + 49/567 = 454/567 - So, 5/7 + 7/81 = 454/567
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7+7/81 5/7+14/81 5/14+7/81 15/7+7/81 5/7+21/81 5/21+7/81 25/7+7/81 5/7+35/81 5/35+7/81 35/7+7/81 5/7+49/81 5/49+7/81