Add 1/15 and 45/18
1st number: 1/15, 2nd number: 2 9/18
1/15 + 45/18 is 77/30.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 18 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 15 × 6 = 90,
1/15 = 1 × 6/15 × 6 = 6/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Add the two like fractions:
6/90 + 225/90 = 6 + 225/90 = 231/90 - 231/90 simplified gives 77/30
- So, 1/15 + 45/18 = 77/30
In mixed form: 217/30
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/15+45/18 1/15+90/18 1/30+45/18 1/15+45/36 3/15+45/18 1/45+45/18 1/15+45/54 5/15+45/18 1/75+45/18 1/15+45/90 7/15+45/18