Add 6/7 and 20/81
6/7 + 20/81 is 626/567.
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,
6/7 = 6 × 81/7 × 81 = 486/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
20/81 = 20 × 7/81 × 7 = 140/567 - Add the two like fractions:
486/567 + 140/567 = 486 + 140/567 = 626/567 - So, 6/7 + 20/81 = 626/567
In mixed form: 159/567
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