Subtract 5/7 from 1/28
1/28 - 5/7 is -19/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 7 is 28
Next, find the equivalent fraction of both fractional numbers with denominator 28 - For the 1st fraction, since 28 × 1 = 28,
1/28 = 1 × 1/28 × 1 = 1/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
5/7 = 5 × 4/7 × 4 = 20/28 - Subtract the two like fractions:
1/28 - 20/28 = 1 - 20/28 = -19/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28-5/7 1/28-10/7 1/56-5/7 1/28-5/14 3/28-5/7 1/28-15/7 1/84-5/7 1/28-5/21 5/28-5/7 1/28-25/7 1/28-5/35 7/28-5/7 1/28-35/7 1/28-5/49