Add 2/7 and 63/81
2/7 + 63/81 is 67/63.
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,
63/81 = 63 × 7/81 × 7 = 441/567 - Add the two like fractions:
162/567 + 441/567 = 162 + 441/567 = 603/567 - 603/567 simplified gives 67/63
- So, 2/7 + 63/81 = 67/63
In mixed form: 14/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7+63/81 2/14+63/81 6/7+63/81 2/21+63/81 10/7+63/81 2/35+63/81 14/7+63/81 2/49+63/81