Add 63/3 and 21/18
1st number: 21 0/3, 2nd number: 1 3/18
63/3 + 21/18 is 133/6.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 3 × 6 = 18,
63/3 = 63 × 6/3 × 6 = 378/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
21/18 = 21 × 1/18 × 1 = 21/18 - Add the two like fractions:
378/18 + 21/18 = 378 + 21/18 = 399/18 - 399/18 simplified gives 133/6
- So, 63/3 + 21/18 = 133/6
In mixed form: 221/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/3+42/18 63/6+21/18 63/3+21/36 63/3+63/18 63/9+21/18 63/3+21/54 63/15+21/18 63/3+21/90 63/21+21/18