Add 1/28 and 7/20
1/28 + 7/20 is 27/70.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
1/28 = 1 × 5/28 × 5 = 5/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
7/20 = 7 × 7/20 × 7 = 49/140 - Add the two like fractions:
5/140 + 49/140 = 5 + 49/140 = 54/140 - 54/140 simplified gives 27/70
- So, 1/28 + 7/20 = 27/70
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28+7/20 1/28+14/20 1/56+7/20 1/28+7/40 3/28+7/20 1/28+21/20 1/84+7/20 1/28+7/60 5/28+7/20 1/28+35/20 7/28+7/20 1/28+49/20