Add 20/15 and 3/45
1st number: 1 5/15, 2nd number: 3/45
20/15 + 3/45 is 7/5.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 45 is 45
Next, find the equivalent fraction of both fractional numbers with denominator 45 - For the 1st fraction, since 15 × 3 = 45,
20/15 = 20 × 3/15 × 3 = 60/45 - Likewise, for the 2nd fraction, since 45 × 1 = 45,
3/45 = 3 × 1/45 × 1 = 3/45 - Add the two like fractions:
60/45 + 3/45 = 60 + 3/45 = 63/45 - 63/45 simplified gives 7/5
- So, 20/15 + 3/45 = 7/5
In mixed form: 12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/15+3/45 20/15+6/45 20/30+3/45 20/15+3/90 60/15+3/45 20/15+9/45 20/45+3/45 20/15+15/45 20/75+3/45 20/15+21/45