Add 27/28 and 27/70
27/28 + 27/70 is 27/20.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 70 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
27/28 = 27 × 5/28 × 5 = 135/140 - Likewise, for the 2nd fraction, since 70 × 2 = 140,
27/70 = 27 × 2/70 × 2 = 54/140 - Add the two like fractions:
135/140 + 54/140 = 135 + 54/140 = 189/140 - 189/140 simplified gives 27/20
- So, 27/28 + 27/70 = 27/20
In mixed form: 17/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 54/28+27/70 27/28+54/70 27/56+27/70 81/28+27/70 27/28+81/70 27/84+27/70