Add 63/20 and 21/18
1st number: 3 3/20, 2nd number: 1 3/18
63/20 + 21/18 is 259/60.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 18 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 20 × 9 = 180,
63/20 = 63 × 9/20 × 9 = 567/180 - Likewise, for the 2nd fraction, since 18 × 10 = 180,
21/18 = 21 × 10/18 × 10 = 210/180 - Add the two like fractions:
567/180 + 210/180 = 567 + 210/180 = 777/180 - 777/180 simplified gives 259/60
- So, 63/20 + 21/18 = 259/60
In mixed form: 419/60
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/20+42/18 63/40+21/18 63/20+21/36 63/20+63/18 63/60+21/18 63/20+21/54 63/20+21/90