Add 2/21 and 81/16
1st number: 2/21, 2nd number: 5 1/16
2/21 + 81/16 is 1733/336.
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,
2/21 = 2 × 16/21 × 16 = 32/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
81/16 = 81 × 21/16 × 21 = 1701/336 - Add the two like fractions:
32/336 + 1701/336 = 32 + 1701/336 = 1733/336 - So, 2/21 + 81/16 = 1733/336
In mixed form: 553/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+81/16 2/42+81/16 2/21+81/32 6/21+81/16 2/63+81/16 2/21+81/48 10/21+81/16 2/21+81/80 14/21+81/16