Subtract 7/35 from 1/28
1/28 - 7/35 is -23/140.
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,
1/28 = 1 × 5/28 × 5 = 5/140 - Likewise, for the 2nd fraction, since 35 × 4 = 140,
7/35 = 7 × 4/35 × 4 = 28/140 - Subtract the two like fractions:
5/140 - 28/140 = 5 - 28/140 = -23/140
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28-7/35 1/28-14/35 1/56-7/35 1/28-7/70 3/28-7/35 1/28-21/35 1/84-7/35 5/28-7/35 7/28-7/35 1/28-49/35