Add 20/28 and 8/3
1st number: 20/28, 2nd number: 2 2/3
20/28 + 8/3 is 71/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 3 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
20/28 = 20 × 3/28 × 3 = 60/84 - Likewise, for the 2nd fraction, since 3 × 28 = 84,
8/3 = 8 × 28/3 × 28 = 224/84 - Add the two like fractions:
60/84 + 224/84 = 60 + 224/84 = 284/84 - 284/84 simplified gives 71/21
- So, 20/28 + 8/3 = 71/21
In mixed form: 38/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+8/3 20/28+16/3 20/56+8/3 20/28+8/6 60/28+8/3 20/28+24/3 20/84+8/3 20/28+8/9 20/28+40/3 20/28+8/15 20/28+56/3 20/28+8/21