Add 84/21 and 25/63
1st number: 4 0/21, 2nd number: 25/63
84/21 + 25/63 is 277/63.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 21 and 63 is 63
Next, find the equivalent fraction of both fractional numbers with denominator 63 - For the 1st fraction, since 21 × 3 = 63,
84/21 = 84 × 3/21 × 3 = 252/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
25/63 = 25 × 1/63 × 1 = 25/63 - Add the two like fractions:
252/63 + 25/63 = 252 + 25/63 = 277/63 - So, 84/21 + 25/63 = 277/63
In mixed form: 425/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/21+50/63 84/42+25/63 84/21+75/63 84/63+25/63