Add 27/15 and 45/18
1st number: 1 12/15, 2nd number: 2 9/18
27/15 + 45/18 is 43/10.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
27/15 = 27 × 6/15 × 6 = 162/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Add the two like fractions:
162/90 + 225/90 = 162 + 225/90 = 387/90 - 387/90 simplified gives 43/10
- So, 27/15 + 45/18 = 43/10
In mixed form: 43/10
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/15+45/18 27/15+90/18 27/30+45/18 27/15+45/36 81/15+45/18 27/45+45/18 27/15+45/54 27/75+45/18 27/15+45/90