Add 20/21 and 81/16
1st number: 20/21, 2nd number: 5 1/16
20/21 + 81/16 is 2021/336.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 21 × 16 = 336,
20/21 = 20 × 16/21 × 16 = 320/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
81/16 = 81 × 21/16 × 21 = 1701/336 - Add the two like fractions:
320/336 + 1701/336 = 320 + 1701/336 = 2021/336 - So, 20/21 + 81/16 = 2021/336
In mixed form: 65/336
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