Add 56/81 and 9/21
56/81 + 9/21 is 635/567.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 21 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
56/81 = 56 × 7/81 × 7 = 392/567 - Likewise, for the 2nd fraction, since 21 × 27 = 567,
9/21 = 9 × 27/21 × 27 = 243/567 - Add the two like fractions:
392/567 + 243/567 = 392 + 243/567 = 635/567 - So, 56/81 + 9/21 = 635/567
In mixed form: 168/567
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