Add 80/5 and 21/16
1st number: 16 0/5, 2nd number: 1 5/16
80/5 + 21/16 is 277/16.
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,
80/5 = 80 × 16/5 × 16 = 1280/80 - Likewise, for the 2nd fraction, since 16 × 5 = 80,
21/16 = 21 × 5/16 × 5 = 105/80 - Add the two like fractions:
1280/80 + 105/80 = 1280 + 105/80 = 1385/80 - 1385/80 simplified gives 277/16
- So, 80/5 + 21/16 = 277/16
In mixed form: 175/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/5+42/16 80/10+21/16 80/5+21/32 80/5+63/16 80/15+21/16 80/5+21/48 80/25+21/16 80/5+21/80 80/35+21/16