Add 10/21 and 16/5
1st number: 10/21, 2nd number: 3 1/5
10/21 + 16/5 is 386/105.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 5 is 105
Next, find the equivalent fraction of both fractional numbers with denominator 105 - For the 1st fraction, since 21 × 5 = 105,
10/21 = 10 × 5/21 × 5 = 50/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
16/5 = 16 × 21/5 × 21 = 336/105 - Add the two like fractions:
50/105 + 336/105 = 50 + 336/105 = 386/105 - So, 10/21 + 16/5 = 386/105
In mixed form: 371/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/21+16/5 10/21+32/5 10/42+16/5 10/21+16/10 30/21+16/5 10/21+48/5 10/63+16/5 10/21+16/15 50/21+16/5 10/21+80/5 10/21+16/25 70/21+16/5 10/21+16/35