Add 1/28 and 20/18
1st number: 1/28, 2nd number: 1 2/18
1/28 + 20/18 is 289/252.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 18 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
1/28 = 1 × 9/28 × 9 = 9/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
20/18 = 20 × 14/18 × 14 = 280/252 - Add the two like fractions:
9/252 + 280/252 = 9 + 280/252 = 289/252 - So, 1/28 + 20/18 = 289/252
In mixed form: 137/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28+20/18 1/28+40/18 1/56+20/18 1/28+20/36 3/28+20/18 1/28+60/18 1/84+20/18 1/28+20/54 5/28+20/18 1/28+20/90 7/28+20/18