Add 63/20 and 21/12
1st number: 3 3/20, 2nd number: 1 9/12
63/20 + 21/12 is 49/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
63/20 = 63 × 3/20 × 3 = 189/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Add the two like fractions:
189/60 + 105/60 = 189 + 105/60 = 294/60 - 294/60 simplified gives 49/10
- So, 63/20 + 21/12 = 49/10
In mixed form: 49/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/20+42/12 63/40+21/12 63/20+21/24 63/20+63/12 63/60+21/12 63/20+21/36 63/20+21/60 63/20+21/84