Add 16/3 and 18/21
1st number: 5 1/3, 2nd number: 18/21
16/3 + 18/21 is 130/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 21 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 21 × 1 = 21,
18/21 = 18 × 1/21 × 1 = 18/21 - Add the two like fractions:
112/21 + 18/21 = 112 + 18/21 = 130/21 - So, 16/3 + 18/21 = 130/21
In mixed form: 64/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/3+18/21 16/3+36/21 16/6+18/21 16/3+18/42 48/3+18/21 16/3+54/21 16/9+18/21 16/3+18/63 80/3+18/21 16/3+90/21 16/15+18/21 16/21+18/21