Add 20/18 and 9/28
1st number: 1 2/18, 2nd number: 9/28
20/18 + 9/28 is 361/252.
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,
20/18 = 20 × 14/18 × 14 = 280/252 - Likewise, for the 2nd fraction, since 28 × 9 = 252,
9/28 = 9 × 9/28 × 9 = 81/252 - Add the two like fractions:
280/252 + 81/252 = 280 + 81/252 = 361/252 - So, 20/18 + 9/28 = 361/252
In mixed form: 1109/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/18+9/28 20/18+18/28 20/36+9/28 20/18+9/56 60/18+9/28 20/18+27/28 20/54+9/28 20/18+9/84 20/18+45/28 20/90+9/28 20/18+63/28