Add 21/49 and 63/18
1st number: 21/49, 2nd number: 3 9/18
21/49 + 63/18 is 55/14.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 49 and 18 is 882
Next, find the equivalent fraction of both fractional numbers with denominator 882 - For the 1st fraction, since 49 × 18 = 882,
21/49 = 21 × 18/49 × 18 = 378/882 - Likewise, for the 2nd fraction, since 18 × 49 = 882,
63/18 = 63 × 49/18 × 49 = 3087/882 - Add the two like fractions:
378/882 + 3087/882 = 378 + 3087/882 = 3465/882 - 3465/882 simplified gives 55/14
- So, 21/49 + 63/18 = 55/14
In mixed form: 313/14
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/49+63/18 21/98+63/18 21/49+63/36 63/49+63/18 21/49+63/54 21/49+63/90