Add 63/10 and 21/12
1st number: 6 3/10, 2nd number: 1 9/12
63/10 + 21/12 is 161/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 10 × 6 = 60,
63/10 = 63 × 6/10 × 6 = 378/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
21/12 = 21 × 5/12 × 5 = 105/60 - Add the two like fractions:
378/60 + 105/60 = 378 + 105/60 = 483/60 - 483/60 simplified gives 161/20
- So, 63/10 + 21/12 = 161/20
In mixed form: 81/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/10+42/12 63/20+21/12 63/10+21/24 63/10+63/12 63/30+21/12 63/10+21/36 63/50+21/12 63/10+21/60 63/70+21/12 63/10+21/84