Add 20/15 and 6/18
1st number: 1 5/15, 2nd number: 6/18
20/15 + 6/18 is 5/3.
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,
20/15 = 20 × 6/15 × 6 = 120/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
6/18 = 6 × 5/18 × 5 = 30/90 - Add the two like fractions:
120/90 + 30/90 = 120 + 30/90 = 150/90 - 150/90 simplified gives 5/3
- So, 20/15 + 6/18 = 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: 40/15+6/18 20/15+12/18 20/30+6/18 20/15+6/36 60/15+6/18 20/45+6/18 20/15+6/54 20/15+30/18 20/75+6/18 20/15+6/90 20/15+42/18