Add 21/8 and 35/81
1st number: 2 5/8, 2nd number: 35/81
21/8 + 35/81 is 1981/648.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 81 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 8 × 81 = 648,
21/8 = 21 × 81/8 × 81 = 1701/648 - Likewise, for the 2nd fraction, since 81 × 8 = 648,
35/81 = 35 × 8/81 × 8 = 280/648 - Add the two like fractions:
1701/648 + 280/648 = 1701 + 280/648 = 1981/648 - So, 21/8 + 35/81 = 1981/648
In mixed form: 337/648
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