Subtract 49/72 from 1/28
1/28 - 49/72 is -325/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 28 × 18 = 504,
1/28 = 1 × 18/28 × 18 = 18/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
49/72 = 49 × 7/72 × 7 = 343/504 - Subtract the two like fractions:
18/504 - 343/504 = 18 - 343/504 = -325/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/28-49/72 1/28-98/72 1/56-49/72 3/28-49/72 1/84-49/72 5/28-49/72 7/28-49/72