Add 84/7 and 7/81
1st number: 12 0/7, 2nd number: 7/81
84/7 + 7/81 is 979/81.
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,
84/7 = 84 × 81/7 × 81 = 6804/567 - Likewise, for the 2nd fraction, since 81 × 7 = 567,
7/81 = 7 × 7/81 × 7 = 49/567 - Add the two like fractions:
6804/567 + 49/567 = 6804 + 49/567 = 6853/567 - 6853/567 simplified gives 979/81
- So, 84/7 + 7/81 = 979/81
In mixed form: 127/81
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