Add 20/81 and 21/16
1st number: 20/81, 2nd number: 1 5/16
20/81 + 21/16 is 2021/1296.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 16 is 1296
Next, find the equivalent fraction of both fractional numbers with denominator 1296 - For the 1st fraction, since 81 × 16 = 1296,
20/81 = 20 × 16/81 × 16 = 320/1296 - Likewise, for the 2nd fraction, since 16 × 81 = 1296,
21/16 = 21 × 81/16 × 81 = 1701/1296 - Add the two like fractions:
320/1296 + 1701/1296 = 320 + 1701/1296 = 2021/1296 - So, 20/81 + 21/16 = 2021/1296
In mixed form: 1725/1296
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