Add 54/18 and 81/84
1st number: 3 0/18, 2nd number: 81/84
54/18 + 81/84 is 111/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 84 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
54/18 = 54 × 14/18 × 14 = 756/252 - Likewise, for the 2nd fraction, since 84 × 3 = 252,
81/84 = 81 × 3/84 × 3 = 243/252 - Add the two like fractions:
756/252 + 243/252 = 756 + 243/252 = 999/252 - 999/252 simplified gives 111/28
- So, 54/18 + 81/84 = 111/28
In mixed form: 327/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/36+81/84 54/90+81/84