Add 7/18 and 81/7
1st number: 7/18, 2nd number: 11 4/7
7/18 + 81/7 is 1507/126.
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,
81/7 = 81 × 18/7 × 18 = 1458/126 - Add the two like fractions:
49/126 + 1458/126 = 49 + 1458/126 = 1507/126 - So, 7/18 + 81/7 = 1507/126
In mixed form: 11121/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/18+81/7 7/36+81/7 7/18+81/14 21/18+81/7 7/54+81/7 7/18+81/21 35/18+81/7 7/90+81/7 7/18+81/35 49/18+81/7 7/18+81/49