Add 5/16 and 21/42
5/16 + 21/42 is 13/16.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 16 and 42 is 336
Next, find the equivalent fraction of both fractional numbers with denominator 336 - For the 1st fraction, since 16 × 21 = 336,
5/16 = 5 × 21/16 × 21 = 105/336 - Likewise, for the 2nd fraction, since 42 × 8 = 336,
21/42 = 21 × 8/42 × 8 = 168/336 - Add the two like fractions:
105/336 + 168/336 = 105 + 168/336 = 273/336 - 273/336 simplified gives 13/16
- So, 5/16 + 21/42 = 13/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/16+21/42 5/32+21/42 5/16+21/84 15/16+21/42 5/16+63/42 5/48+21/42 25/16+21/42 5/80+21/42 35/16+21/42