Add 3/18 and 21/14
1st number: 3/18, 2nd number: 1 7/14
3/18 + 21/14 is 5/3.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 14 is 126
Next, find the equivalent fraction of both fractional numbers with denominator 126 - For the 1st fraction, since 18 × 7 = 126,
3/18 = 3 × 7/18 × 7 = 21/126 - Likewise, for the 2nd fraction, since 14 × 9 = 126,
21/14 = 21 × 9/14 × 9 = 189/126 - Add the two like fractions:
21/126 + 189/126 = 21 + 189/126 = 210/126 - 210/126 simplified gives 5/3
- So, 3/18 + 21/14 = 5/3
In mixed form: 12/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/18+21/14 3/18+42/14 3/36+21/14 3/18+21/28 9/18+21/14 3/18+63/14 3/54+21/14 3/18+21/42 15/18+21/14 3/90+21/14 3/18+21/70 21/18+21/14 3/18+21/98