Add 5/21 and 15/16
5/21 + 15/16 is 395/336.
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,
5/21 = 5 × 16/21 × 16 = 80/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
15/16 = 15 × 21/16 × 21 = 315/336 - Add the two like fractions:
80/336 + 315/336 = 80 + 315/336 = 395/336 - So, 5/21 + 15/16 = 395/336
In mixed form: 159/336
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