Add 1/81 and 21/12
1st number: 1/81, 2nd number: 1 9/12
1/81 + 21/12 is 571/324.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
1/81 = 1 × 4/81 × 4 = 4/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
21/12 = 21 × 27/12 × 27 = 567/324 - Add the two like fractions:
4/324 + 567/324 = 4 + 567/324 = 571/324 - So, 1/81 + 21/12 = 571/324
In mixed form: 1247/324
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