Add 12/15 and 20/27
12/15 + 20/27 is 208/135.
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,
12/15 = 12 × 9/15 × 9 = 108/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
20/27 = 20 × 5/27 × 5 = 100/135 - Add the two like fractions:
108/135 + 100/135 = 108 + 100/135 = 208/135 - So, 12/15 + 20/27 = 208/135
In mixed form: 173/135
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/15+20/27 12/15+40/27 12/30+20/27 12/15+20/54 36/15+20/27 12/15+60/27 12/45+20/27 12/15+20/81 60/15+20/27 12/75+20/27 84/15+20/27