Add 21/2 and 1/5
1st number: 10 1/2, 2nd number: 1/5
21/2 + 1/5 is 107/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 5 is 10
Next, find the equivalent fraction of both fractional numbers with denominator 10 - For the 1st fraction, since 2 × 5 = 10,
21/2 = 21 × 5/2 × 5 = 105/10 - Likewise, for the 2nd fraction, since 5 × 2 = 10,
1/5 = 1 × 2/5 × 2 = 2/10 - Add the two like fractions:
105/10 + 2/10 = 105 + 2/10 = 107/10 - So, 21/2 + 1/5 = 107/10
In mixed form: 107/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/2+1/5 21/2+2/5 21/4+1/5 21/2+1/10 63/2+1/5 21/2+3/5 21/6+1/5 21/2+1/15 21/10+1/5 21/2+1/25 21/2+7/5 21/14+1/5 21/2+1/35