Add 10/15 and 12/30
10/15 + 12/30 is 16/15.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 30 is 30
Next, find the equivalent fraction of both fractional numbers with denominator 30 - For the 1st fraction, since 15 × 2 = 30,
10/15 = 10 × 2/15 × 2 = 20/30 - Likewise, for the 2nd fraction, since 30 × 1 = 30,
12/30 = 12 × 1/30 × 1 = 12/30 - Add the two like fractions:
20/30 + 12/30 = 20 + 12/30 = 32/30 - 32/30 simplified gives 16/15
- So, 10/15 + 12/30 = 16/15
In mixed form: 11/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15+12/30 10/15+24/30 10/30+12/30 10/15+12/60 30/15+12/30 10/15+36/30 10/45+12/30 10/15+12/90 50/15+12/30 10/15+60/30 10/75+12/30 70/15+12/30 10/15+84/30