Add 25/84 and 21/35
25/84 + 21/35 is 377/420.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 35 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 84 × 5 = 420,
25/84 = 25 × 5/84 × 5 = 125/420 - Likewise, for the 2nd fraction, since 35 × 12 = 420,
21/35 = 21 × 12/35 × 12 = 252/420 - Add the two like fractions:
125/420 + 252/420 = 125 + 252/420 = 377/420 - So, 25/84 + 21/35 = 377/420
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/84+21/35 25/84+42/35 25/84+21/70 75/84+21/35 25/84+63/35