Add 20/28 and 5/9
20/28 + 5/9 is 80/63.
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,
5/9 = 5 × 28/9 × 28 = 140/252 - Add the two like fractions:
180/252 + 140/252 = 180 + 140/252 = 320/252 - 320/252 simplified gives 80/63
- So, 20/28 + 5/9 = 80/63
In mixed form: 117/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+5/9 20/28+10/9 20/56+5/9 20/28+5/18 60/28+5/9 20/28+15/9 20/84+5/9 20/28+5/27 20/28+25/9 20/28+5/45 20/28+35/9 20/28+5/63