Add 21/7 and 10/81, Solve 3 0/7 + 10/81 as a fraction

Add 21/7 and 10/81

1^st number: 3 0/7, 2^nd number: 10/81

21/7 + 10/81 is 253/81.

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,
21/7 = 21 × 81/7 × 81 = 1701/567
Likewise, for the 2nd fraction, since 81 × 7 = 567,
10/81 = 10 × 7/81 × 7 = 70/567
Add the two like fractions:
1701/567 + 70/567 = 1701 + 70/567 = 1771/567
1771/567 simplified gives 253/81
So, 21/7 + 10/81 = 253/81
In mixed form: 310/81

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