Add 2/21 and 15/5
1st number: 2/21, 2nd number: 3 0/5
2/21 + 15/5 is 65/21.
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,
15/5 = 15 × 21/5 × 21 = 315/105 - Add the two like fractions:
10/105 + 315/105 = 10 + 315/105 = 325/105 - 325/105 simplified gives 65/21
- So, 2/21 + 15/5 = 65/21
In mixed form: 32/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/21+15/5 2/21+30/5 2/42+15/5 2/21+15/10 6/21+15/5 2/21+45/5 2/63+15/5 10/21+15/5 2/21+75/5 2/21+15/25 14/21+15/5 2/21+15/35