Add 20/28 and 9/56
20/28 + 9/56 is 7/8.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 56 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
20/28 = 20 × 2/28 × 2 = 40/56 - Likewise, for the 2nd fraction, since 56 × 1 = 56,
9/56 = 9 × 1/56 × 1 = 9/56 - Add the two like fractions:
40/56 + 9/56 = 40 + 9/56 = 49/56 - 49/56 simplified gives 7/8
- So, 20/28 + 9/56 = 7/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/28+9/56 20/28+18/56 20/56+9/56 60/28+9/56 20/28+27/56 20/84+9/56 20/28+45/56 20/28+63/56