Add 10/45 and 20/15
1st number: 10/45, 2nd number: 1 5/15
10/45 + 20/15 is 14/9.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 15 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 45 × 1 = 45,
10/45 = 10 × 1/45 × 1 = 10/45 - Likewise, for the 2nd fraction, since 15 × 3 = 45,
20/15 = 20 × 3/15 × 3 = 60/45 - Add the two like fractions:
10/45 + 60/45 = 10 + 60/45 = 70/45 - 70/45 simplified gives 14/9
- So, 10/45 + 20/15 = 14/9
In mixed form: 15/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/45+20/15 10/45+40/15 10/90+20/15 10/45+20/30 30/45+20/15 10/45+60/15 10/45+20/45 50/45+20/15 10/45+20/75 70/45+20/15