Add 20/15 and 15/27
1st number: 1 5/15, 2nd number: 15/27
20/15 + 15/27 is 17/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 27 is 135
Next, find the equivalent fraction of both fractional numbers with denominator 135 - For the 1st fraction, since 15 × 9 = 135,
20/15 = 20 × 9/15 × 9 = 180/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
15/27 = 15 × 5/27 × 5 = 75/135 - Add the two like fractions:
180/135 + 75/135 = 180 + 75/135 = 255/135 - 255/135 simplified gives 17/9
- So, 20/15 + 15/27 = 17/9
In mixed form: 18/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+15/27 20/15+30/27 20/30+15/27 20/15+15/54 60/15+15/27 20/15+45/27 20/45+15/27 20/15+15/81 20/15+75/27 20/75+15/27