Add 5/15 and 45/18
1st number: 5/15, 2nd number: 2 9/18
5/15 + 45/18 is 17/6.
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,
5/15 = 5 × 6/15 × 6 = 30/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
45/18 = 45 × 5/18 × 5 = 225/90 - Add the two like fractions:
30/90 + 225/90 = 30 + 225/90 = 255/90 - 255/90 simplified gives 17/6
- So, 5/15 + 45/18 = 17/6
In mixed form: 25/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/15+45/18 5/15+90/18 5/30+45/18 5/15+45/36 5/45+45/18 5/15+45/54 25/15+45/18 5/75+45/18 5/15+45/90 35/15+45/18