Add 2/21 and 28/5
1st number: 2/21, 2nd number: 5 3/5
2/21 + 28/5 is 598/105.
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,
2/21 = 2 × 5/21 × 5 = 10/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
28/5 = 28 × 21/5 × 21 = 588/105 - Add the two like fractions:
10/105 + 588/105 = 10 + 588/105 = 598/105 - So, 2/21 + 28/5 = 598/105
In mixed form: 573/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+28/5 2/21+56/5 2/42+28/5 2/21+28/10 6/21+28/5 2/21+84/5 2/63+28/5 2/21+28/15 10/21+28/5 2/21+28/25 14/21+28/5 2/21+28/35