Add 20/28 and 14/9
1st number: 20/28, 2nd number: 1 5/9
20/28 + 14/9 is 143/63.
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,
14/9 = 14 × 28/9 × 28 = 392/252 - Add the two like fractions:
180/252 + 392/252 = 180 + 392/252 = 572/252 - 572/252 simplified gives 143/63
- So, 20/28 + 14/9 = 143/63
In mixed form: 217/63
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+14/9 20/28+28/9 20/56+14/9 20/28+14/18 60/28+14/9 20/28+42/9 20/84+14/9 20/28+14/27 20/28+70/9 20/28+14/45 20/28+98/9 20/28+14/63