Add 18/54 and 63/12
1st number: 18/54, 2nd number: 5 3/12
18/54 + 63/12 is 67/12.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 54 and 12 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 54 × 2 = 108,
18/54 = 18 × 2/54 × 2 = 36/108 - Likewise, for the 2nd fraction, since 12 × 9 = 108,
63/12 = 63 × 9/12 × 9 = 567/108 - Add the two like fractions:
36/108 + 567/108 = 36 + 567/108 = 603/108 - 603/108 simplified gives 67/12
- So, 18/54 + 63/12 = 67/12
In mixed form: 57/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/54+63/12 18/54+63/24 18/54+63/36 90/54+63/12 18/54+63/60 18/54+63/84