Add 7/28 and 20/8
1st number: 7/28, 2nd number: 2 4/8
7/28 + 20/8 is 11/4.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 8 is 56
Next, find the equivalent fraction of both fractional numbers with denominator 56 - For the 1st fraction, since 28 × 2 = 56,
7/28 = 7 × 2/28 × 2 = 14/56 - Likewise, for the 2nd fraction, since 8 × 7 = 56,
20/8 = 20 × 7/8 × 7 = 140/56 - Add the two like fractions:
14/56 + 140/56 = 14 + 140/56 = 154/56 - 154/56 simplified gives 11/4
- So, 7/28 + 20/8 = 11/4
In mixed form: 23/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28+20/8 7/28+40/8 7/56+20/8 7/28+20/16 21/28+20/8 7/28+60/8 7/84+20/8 7/28+20/24 35/28+20/8 7/28+20/40 49/28+20/8 7/28+20/56