Subtract 27/35 from 7/28
7/28 - 27/35 is -73/140.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 35 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
7/28 = 7 × 5/28 × 5 = 35/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
27/35 = 27 × 4/35 × 4 = 108/140 - Subtract the two like fractions:
35/140 - 108/140 = 35 - 108/140 = -73/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-27/35 7/28-54/35 7/56-27/35 7/28-27/70 21/28-27/35 7/28-81/35 7/84-27/35 35/28-27/35 49/28-27/35