Add 12/18 and 63/15
1st number: 12/18, 2nd number: 4 3/15
12/18 + 63/15 is 73/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
12/18 = 12 × 5/18 × 5 = 60/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
63/15 = 63 × 6/15 × 6 = 378/90 - Add the two like fractions:
60/90 + 378/90 = 60 + 378/90 = 438/90 - 438/90 simplified gives 73/15
- So, 12/18 + 63/15 = 73/15
In mixed form: 413/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18+63/15 12/36+63/15 12/18+63/30 36/18+63/15 12/54+63/15 12/18+63/45 60/18+63/15 12/90+63/15 12/18+63/75 84/18+63/15