Add 7/28 and 20/18
1st number: 7/28, 2nd number: 1 2/18
7/28 + 20/18 is 49/36.
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,
7/28 = 7 × 9/28 × 9 = 63/252 - Likewise, for the 2nd fraction, since 18 × 14 = 252,
20/18 = 20 × 14/18 × 14 = 280/252 - Add the two like fractions:
63/252 + 280/252 = 63 + 280/252 = 343/252 - 343/252 simplified gives 49/36
- So, 7/28 + 20/18 = 49/36
In mixed form: 113/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28+20/18 7/28+40/18 7/56+20/18 7/28+20/36 21/28+20/18 7/28+60/18 7/84+20/18 7/28+20/54 35/28+20/18 7/28+20/90 49/28+20/18