Add 2/7 and 3/81
2/7 + 3/81 is 61/189.
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,
2/7 = 2 × 81/7 × 81 = 162/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
3/81 = 3 × 7/81 × 7 = 21/567 - Add the two like fractions:
162/567 + 21/567 = 162 + 21/567 = 183/567 - 183/567 simplified gives 61/189
- So, 2/7 + 3/81 = 61/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7+3/81 2/7+6/81 2/14+3/81 6/7+3/81 2/7+9/81 2/21+3/81 10/7+3/81 2/7+15/81 2/35+3/81 14/7+3/81 2/7+21/81 2/49+3/81