Add 25/21 and 2/5
1st number: 1 4/21, 2nd number: 2/5
25/21 + 2/5 is 167/105.
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,
25/21 = 25 × 5/21 × 5 = 125/105 - Likewise, for the 2nd fraction, since 5 × 21 = 105,
2/5 = 2 × 21/5 × 21 = 42/105 - Add the two like fractions:
125/105 + 42/105 = 125 + 42/105 = 167/105 - So, 25/21 + 2/5 = 167/105
In mixed form: 162/105
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+2/5 25/21+4/5 25/42+2/5 25/21+2/10 75/21+2/5 25/21+6/5 25/63+2/5 25/21+2/15 25/21+10/5 25/21+2/25 25/21+14/5 25/21+2/35