Add 20/28 and 36/9
1st number: 20/28, 2nd number: 4 0/9
20/28 + 36/9 is 33/7.
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,
20/28 = 20 × 9/28 × 9 = 180/252 - Likewise, for the 2nd fraction, since 9 × 28 = 252,
36/9 = 36 × 28/9 × 28 = 1008/252 - Add the two like fractions:
180/252 + 1008/252 = 180 + 1008/252 = 1188/252 - 1188/252 simplified gives 33/7
- So, 20/28 + 36/9 = 33/7
In mixed form: 45/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+36/9 20/28+72/9 20/56+36/9 20/28+36/18 60/28+36/9 20/84+36/9 20/28+36/27 20/28+36/45 20/28+36/63