Add 3/15 and 80/18
1st number: 3/15, 2nd number: 4 8/18
3/15 + 80/18 is 209/45.
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,
3/15 = 3 × 6/15 × 6 = 18/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
80/18 = 80 × 5/18 × 5 = 400/90 - Add the two like fractions:
18/90 + 400/90 = 18 + 400/90 = 418/90 - 418/90 simplified gives 209/45
- So, 3/15 + 80/18 = 209/45
In mixed form: 429/45
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/15+80/18 3/30+80/18 3/15+80/36 9/15+80/18 3/45+80/18 3/15+80/54 3/75+80/18 3/15+80/90 21/15+80/18