Add 21/5 and 3/16
1st number: 4 1/5, 2nd number: 3/16
21/5 + 3/16 is 351/80.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 16 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 5 × 16 = 80,
21/5 = 21 × 16/5 × 16 = 336/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
3/16 = 3 × 5/16 × 5 = 15/80 - Add the two like fractions:
336/80 + 15/80 = 336 + 15/80 = 351/80 - So, 21/5 + 3/16 = 351/80
In mixed form: 431/80
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/5+3/16 21/5+6/16 21/10+3/16 21/5+3/32 63/5+3/16 21/5+9/16 21/15+3/16 21/5+3/48 21/5+15/16 21/25+3/16 21/5+3/80 21/5+21/16 21/35+3/16