Add 9/15 and 30/18
1st number: 9/15, 2nd number: 1 12/18
9/15 + 30/18 is 34/15.
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,
9/15 = 9 × 6/15 × 6 = 54/90 - Likewise, for the 2nd fraction, since 18 × 5 = 90,
30/18 = 30 × 5/18 × 5 = 150/90 - Add the two like fractions:
54/90 + 150/90 = 54 + 150/90 = 204/90 - 204/90 simplified gives 34/15
- So, 9/15 + 30/18 = 34/15
In mixed form: 24/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+30/18 9/15+60/18 9/30+30/18 9/15+30/36 27/15+30/18 9/15+90/18 9/45+30/18 9/15+30/54 45/15+30/18 9/75+30/18 9/15+30/90 63/15+30/18