Add 7/18 and 9/15
7/18 + 9/15 is 89/90.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 15 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
7/18 = 7 × 5/18 × 5 = 35/90 - Likewise, for the 2nd fraction, since 15 × 6 = 90,
9/15 = 9 × 6/15 × 6 = 54/90 - Add the two like fractions:
35/90 + 54/90 = 35 + 54/90 = 89/90 - So, 7/18 + 9/15 = 89/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+9/15 7/18+18/15 7/36+9/15 7/18+9/30 21/18+9/15 7/18+27/15 7/54+9/15 7/18+9/45 35/18+9/15 7/18+45/15 7/90+9/15 7/18+9/75 49/18+9/15 7/18+63/15