Add 63/9 and 15/12
1st number: 7 0/9, 2nd number: 1 3/12
63/9 + 15/12 is 33/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 12 is 36
Next, find the equivalent fraction of both fractional numbers with denominator 36 - For the 1st fraction, since 9 × 4 = 36,
63/9 = 63 × 4/9 × 4 = 252/36 - Likewise, for the 2nd fraction, since 12 × 3 = 36,
15/12 = 15 × 3/12 × 3 = 45/36 - Add the two like fractions:
252/36 + 45/36 = 252 + 45/36 = 297/36 - 297/36 simplified gives 33/4
- So, 63/9 + 15/12 = 33/4
In mixed form: 81/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 63/9+30/12 63/18+15/12 63/9+15/24 63/9+45/12 63/27+15/12 63/9+15/36 63/9+75/12 63/45+15/12 63/9+15/60 63/9+15/84