Add 15/30 and 63/12
1st number: 15/30, 2nd number: 5 3/12
15/30 + 63/12 is 23/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
15/30 = 15 × 2/30 × 2 = 30/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
63/12 = 63 × 5/12 × 5 = 315/60 - Add the two like fractions:
30/60 + 315/60 = 30 + 315/60 = 345/60 - 345/60 simplified gives 23/4
- So, 15/30 + 63/12 = 23/4
In mixed form: 53/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 15/60+63/12 15/30+63/24 45/30+63/12 15/90+63/12 15/30+63/36 75/30+63/12 15/30+63/60 15/30+63/84