Add 16/3 and 81/7
1st number: 5 1/3, 2nd number: 11 4/7
16/3 + 81/7 is 355/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 7 is 21
Next, find the equivalent fraction of both fractional numbers with denominator 21 - For the 1st fraction, since 3 × 7 = 21,
16/3 = 16 × 7/3 × 7 = 112/21 - Likewise, for the 2nd fraction, since 7 × 3 = 21,
81/7 = 81 × 3/7 × 3 = 243/21 - Add the two like fractions:
112/21 + 243/21 = 112 + 243/21 = 355/21 - So, 16/3 + 81/7 = 355/21
In mixed form: 1619/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/3+81/7 16/6+81/7 16/3+81/14 48/3+81/7 16/9+81/7 16/3+81/21 80/3+81/7 16/15+81/7 16/3+81/35 16/21+81/7 16/3+81/49