Add 20/28 and 3/7
20/28 + 3/7 is 8/7.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
20/28 = 20 × 1/28 × 1 = 20/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
3/7 = 3 × 4/7 × 4 = 12/28 - Add the two like fractions:
20/28 + 12/28 = 20 + 12/28 = 32/28 - 32/28 simplified gives 8/7
- So, 20/28 + 3/7 = 8/7
In mixed form: 11/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+3/7 20/28+6/7 20/56+3/7 20/28+3/14 60/28+3/7 20/28+9/7 20/84+3/7 20/28+3/21 20/28+15/7 20/28+3/35 20/28+21/7 20/28+3/49