Add 9/12 and 63/15
1st number: 9/12, 2nd number: 4 3/15
9/12 + 63/15 is 99/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
9/12 = 9 × 5/12 × 5 = 45/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
63/15 = 63 × 4/15 × 4 = 252/60 - Add the two like fractions:
45/60 + 252/60 = 45 + 252/60 = 297/60 - 297/60 simplified gives 99/20
- So, 9/12 + 63/15 = 99/20
In mixed form: 419/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+63/15 9/24+63/15 9/12+63/30 27/12+63/15 9/36+63/15 9/12+63/45 45/12+63/15 9/60+63/15 9/12+63/75 63/12+63/15 9/84+63/15