Add 14/18 and 21/28
14/18 + 21/28 is 55/36.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 28 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 18 × 14 = 252,
14/18 = 14 × 14/18 × 14 = 196/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
21/28 = 21 × 9/28 × 9 = 189/252 - Add the two like fractions:
196/252 + 189/252 = 196 + 189/252 = 385/252 - 385/252 simplified gives 55/36
- So, 14/18 + 21/28 = 55/36
In mixed form: 119/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/18+21/28 14/18+42/28 14/36+21/28 14/18+21/56 42/18+21/28 14/18+63/28 14/54+21/28 14/18+21/84 70/18+21/28 14/90+21/28 98/18+21/28