Add 5/42 and 21/16
1st number: 5/42, 2nd number: 1 5/16
5/42 + 21/16 is 481/336.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 16 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 42 × 8 = 336,
5/42 = 5 × 8/42 × 8 = 40/336 - Likewise, for the 2nd fraction, since 16 × 21 = 336,
21/16 = 21 × 21/16 × 21 = 441/336 - Add the two like fractions:
40/336 + 441/336 = 40 + 441/336 = 481/336 - So, 5/42 + 21/16 = 481/336
In mixed form: 1145/336
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/42+21/16 5/42+42/16 5/84+21/16 5/42+21/32 15/42+21/16 5/42+63/16 5/42+21/48 25/42+21/16 5/42+21/80 35/42+21/16