Add 5/7 and 6/81
5/7 + 6/81 is 149/189.
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,
6/81 = 6 × 7/81 × 7 = 42/567 - Add the two like fractions:
405/567 + 42/567 = 405 + 42/567 = 447/567 - 447/567 simplified gives 149/189
- So, 5/7 + 6/81 = 149/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/7+6/81 5/7+12/81 5/14+6/81 15/7+6/81 5/7+18/81 5/21+6/81 25/7+6/81 5/7+30/81 5/35+6/81 35/7+6/81 5/7+42/81 5/49+6/81