Add 7/18 and 15/7
1st number: 7/18, 2nd number: 2 1/7
7/18 + 15/7 is 319/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 7 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
7/18 = 7 × 7/18 × 7 = 49/126 - Likewise, for the 2nd fraction, since 7 × 18 = 126,
15/7 = 15 × 18/7 × 18 = 270/126 - Add the two like fractions:
49/126 + 270/126 = 49 + 270/126 = 319/126 - So, 7/18 + 15/7 = 319/126
In mixed form: 267/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+15/7 7/18+30/7 7/36+15/7 7/18+15/14 21/18+15/7 7/18+45/7 7/54+15/7 7/18+15/21 35/18+15/7 7/18+75/7 7/90+15/7 7/18+15/35 49/18+15/7 7/18+15/49