Add 18/3 and 27/15
1st number: 6 0/3, 2nd number: 1 12/15
18/3 + 27/15 is 39/5.
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,
18/3 = 18 × 5/3 × 5 = 90/15 - Likewise, for the 2nd fraction, since 15 × 1 = 15,
27/15 = 27 × 1/15 × 1 = 27/15 - Add the two like fractions:
90/15 + 27/15 = 90 + 27/15 = 117/15 - 117/15 simplified gives 39/5
- So, 18/3 + 27/15 = 39/5
In mixed form: 74/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/3+27/15 18/3+54/15 18/6+27/15 18/3+27/30 54/3+27/15 18/3+81/15 18/9+27/15 18/3+27/45 90/3+27/15 18/15+27/15 18/3+27/75 18/21+27/15