Add 54/3 and 81/15
1st number: 18 0/3, 2nd number: 5 6/15
54/3 + 81/15 is 117/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 15 is 15
Next, find the equivalent fraction of both fractional numbers with denominator 15 - For the 1st fraction, since 3 × 5 = 15,
54/3 = 54 × 5/3 × 5 = 270/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
81/15 = 81 × 1/15 × 1 = 81/15 - Add the two like fractions:
270/15 + 81/15 = 270 + 81/15 = 351/15 - 351/15 simplified gives 117/5
- So, 54/3 + 81/15 = 117/5
In mixed form: 232/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/6+81/15 54/3+81/30 54/9+81/15 54/3+81/45 54/15+81/15 54/3+81/75 54/21+81/15