Add 1/2 and 21/3
1st number: 1/2, 2nd number: 7 0/3
1/2 + 21/3 is 15/2.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 3 is 6
Next, find the equivalent fraction of both fractional numbers with denominator 6 - For the 1st fraction, since 2 × 3 = 6,
1/2 = 1 × 3/2 × 3 = 3/6 - Likewise, for the 2nd fraction, since 3 × 2 = 6,
21/3 = 21 × 2/3 × 2 = 42/6 - Add the two like fractions:
3/6 + 42/6 = 3 + 42/6 = 45/6 - 45/6 simplified gives 15/2
- So, 1/2 + 21/3 = 15/2
In mixed form: 71/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 1/2+42/3 1/4+21/3 1/2+21/6 3/2+21/3 1/2+63/3 1/6+21/3 1/2+21/9 5/2+21/3 1/10+21/3 1/2+21/15 7/2+21/3 1/14+21/3