Add 25/84 and 21/25
25/84 + 21/25 is 2389/2100.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 25 is 2100
Next, find the equivalent fraction of both fractional numbers with denominator 2100 - For the 1st fraction, since 84 × 25 = 2100,
25/84 = 25 × 25/84 × 25 = 625/2100 - Likewise, for the 2nd fraction, since 25 × 84 = 2100,
21/25 = 21 × 84/25 × 84 = 1764/2100 - Add the two like fractions:
625/2100 + 1764/2100 = 625 + 1764/2100 = 2389/2100 - So, 25/84 + 21/25 = 2389/2100
In mixed form: 1289/2100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/84+21/25 25/84+42/25 25/84+21/50 75/84+21/25 25/84+63/25 25/84+21/75