Add 25/21 and 21/63
1st number: 1 4/21, 2nd number: 21/63
25/21 + 21/63 is 32/21.
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,
25/21 = 25 × 3/21 × 3 = 75/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Add the two like fractions:
75/63 + 21/63 = 75 + 21/63 = 96/63 - 96/63 simplified gives 32/21
- So, 25/21 + 21/63 = 32/21
In mixed form: 111/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/21+21/63 25/21+42/63 25/42+21/63 75/21+21/63 25/63+21/63