Add 1/18 and 15/21
1/18 + 15/21 is 97/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 21 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
1/18 = 1 × 7/18 × 7 = 7/126 - Likewise, for the 2nd fraction, since 21 × 6 = 126,
15/21 = 15 × 6/21 × 6 = 90/126 - Add the two like fractions:
7/126 + 90/126 = 7 + 90/126 = 97/126 - So, 1/18 + 15/21 = 97/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/18+15/21 1/18+30/21 1/36+15/21 1/18+15/42 3/18+15/21 1/18+45/21 1/54+15/21 1/18+15/63 5/18+15/21 1/18+75/21 1/90+15/21 7/18+15/21