Add 25/21 and 5/4
1st number: 1 4/21, 2nd number: 1 1/4
25/21 + 5/4 is 205/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 4 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 21 × 4 = 84,
25/21 = 25 × 4/21 × 4 = 100/84 - Likewise, for the 2nd fraction, since 4 × 21 = 84,
5/4 = 5 × 21/4 × 21 = 105/84 - Add the two like fractions:
100/84 + 105/84 = 100 + 105/84 = 205/84 - So, 25/21 + 5/4 = 205/84
In mixed form: 237/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+5/4 25/21+10/4 25/42+5/4 25/21+5/8 75/21+5/4 25/21+15/4 25/63+5/4 25/21+5/12 25/21+25/4 25/21+5/20 25/21+35/4 25/21+5/28