Add 20/81 and 21/24
20/81 + 21/24 is 727/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 24 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
20/81 = 20 × 8/81 × 8 = 160/648 - Likewise, for the 2nd fraction, since 24 × 27 = 648,
21/24 = 21 × 27/24 × 27 = 567/648 - Add the two like fractions:
160/648 + 567/648 = 160 + 567/648 = 727/648 - So, 20/81 + 21/24 = 727/648
In mixed form: 179/648
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