Add 9/15 and 7/18
9/15 + 7/18 is 89/90.
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,
7/18 = 7 × 5/18 × 5 = 35/90 - Add the two like fractions:
54/90 + 35/90 = 54 + 35/90 = 89/90 - So, 9/15 + 7/18 = 89/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/15+7/18 9/15+14/18 9/30+7/18 9/15+7/36 27/15+7/18 9/15+21/18 9/45+7/18 9/15+7/54 45/15+7/18 9/15+35/18 9/75+7/18 9/15+7/90 63/15+7/18 9/15+49/18