Add 18/28 and 20/9
1st number: 18/28, 2nd number: 2 2/9
18/28 + 20/9 is 361/126.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 9 is 252
Next, find the equivalent fraction of both fractional numbers with denominator 252 - For the 1st fraction, since 28 × 9 = 252,
18/28 = 18 × 9/28 × 9 = 162/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
20/9 = 20 × 28/9 × 28 = 560/252 - Add the two like fractions:
162/252 + 560/252 = 162 + 560/252 = 722/252 - 722/252 simplified gives 361/126
- So, 18/28 + 20/9 = 361/126
In mixed form: 2109/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/28+20/9 18/28+40/9 18/56+20/9 18/28+20/18 54/28+20/9 18/28+60/9 18/84+20/9 18/28+20/27 90/28+20/9 18/28+20/45 18/28+20/63