Add 10/15 and 12/27
10/15 + 12/27 is 10/9.
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,
10/15 = 10 × 9/15 × 9 = 90/135 - Likewise, for the 2nd fraction, since 27 × 5 = 135,
12/27 = 12 × 5/27 × 5 = 60/135 - Add the two like fractions:
90/135 + 60/135 = 90 + 60/135 = 150/135 - 150/135 simplified gives 10/9
- So, 10/15 + 12/27 = 10/9
In mixed form: 11/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15+12/27 10/15+24/27 10/30+12/27 10/15+12/54 30/15+12/27 10/15+36/27 10/45+12/27 10/15+12/81 50/15+12/27 10/15+60/27 10/75+12/27 70/15+12/27 10/15+84/27