Add 15/18 and 63/8
1st number: 15/18, 2nd number: 7 7/8
15/18 + 63/8 is 209/24.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 8 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
15/18 = 15 × 4/18 × 4 = 60/72 - Likewise, for the 2nd fraction, since 8 × 9 = 72,
63/8 = 63 × 9/8 × 9 = 567/72 - Add the two like fractions:
60/72 + 567/72 = 60 + 567/72 = 627/72 - 627/72 simplified gives 209/24
- So, 15/18 + 63/8 = 209/24
In mixed form: 817/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/18+63/8 15/36+63/8 15/18+63/16 45/18+63/8 15/54+63/8 15/18+63/24 75/18+63/8 15/90+63/8 15/18+63/40 15/18+63/56