Add 7/81 and 21/7
1st number: 7/81, 2nd number: 3 0/7
7/81 + 21/7 is 250/81.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 7 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
7/81 = 7 × 7/81 × 7 = 49/567 - Likewise, for the 2nd fraction, since 7 × 81 = 567,
21/7 = 21 × 81/7 × 81 = 1701/567 - Add the two like fractions:
49/567 + 1701/567 = 49 + 1701/567 = 1750/567 - 1750/567 simplified gives 250/81
- So, 7/81 + 21/7 = 250/81
In mixed form: 37/81
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