Add 63/4 and 21/18
1st number: 15 3/4, 2nd number: 1 3/18
63/4 + 21/18 is 203/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 18 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 4 × 9 = 36,
63/4 = 63 × 9/4 × 9 = 567/36 - Likewise, for the 2nd fraction, since 18 × 2 = 36,
21/18 = 21 × 2/18 × 2 = 42/36 - Add the two like fractions:
567/36 + 42/36 = 567 + 42/36 = 609/36 - 609/36 simplified gives 203/12
- So, 63/4 + 21/18 = 203/12
In mixed form: 1611/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/4+42/18 63/8+21/18 63/4+21/36 63/4+63/18 63/12+21/18 63/4+21/54 63/20+21/18 63/4+21/90 63/28+21/18