Add 45/21 and 21/63
1st number: 2 3/21, 2nd number: 21/63
45/21 + 21/63 is 52/21.
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,
45/21 = 45 × 3/21 × 3 = 135/63 - Likewise, for the 2nd fraction, since 63 × 1 = 63,
21/63 = 21 × 1/63 × 1 = 21/63 - Add the two like fractions:
135/63 + 21/63 = 135 + 21/63 = 156/63 - 156/63 simplified gives 52/21
- So, 45/21 + 21/63 = 52/21
In mixed form: 210/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/21+21/63 45/21+42/63 45/42+21/63 45/63+21/63