Add 20/18 and 15/27
1st number: 1 2/18, 2nd number: 15/27
20/18 + 15/27 is 5/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 27 is 54
Next, find the equivalent fraction of both fractional numbers with denominator 54 - For the 1st fraction, since 18 × 3 = 54,
20/18 = 20 × 3/18 × 3 = 60/54 - Likewise, for the 2nd fraction, since 27 × 2 = 54,
15/27 = 15 × 2/27 × 2 = 30/54 - Add the two like fractions:
60/54 + 30/54 = 60 + 30/54 = 90/54 - 90/54 simplified gives 5/3
- So, 20/18 + 15/27 = 5/3
In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+15/27 20/18+30/27 20/36+15/27 20/18+15/54 60/18+15/27 20/18+45/27 20/54+15/27 20/18+15/81 20/18+75/27 20/90+15/27