Subtract 1/7 from 15/28
15/28 - 1/7 is 11/28.
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,
15/28 = 15 × 1/28 × 1 = 15/28 - Likewise, for the 2nd fraction, since 7 × 4 = 28,
1/7 = 1 × 4/7 × 4 = 4/28 - Subtract the two like fractions:
15/28 - 4/28 = 15 - 4/28 = 11/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 30/28-1/7 15/28-2/7 15/56-1/7 15/28-1/14 45/28-1/7 15/28-3/7 15/84-1/7 15/28-1/21 75/28-1/7 15/28-5/7 15/28-1/35 15/28-1/49