Subtract 27/72 from 28/56
28/56 - 27/72 is 1/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 56 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 56 × 9 = 504,
28/56 = 28 × 9/56 × 9 = 252/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
27/72 = 27 × 7/72 × 7 = 189/504 - Subtract the two like fractions:
252/504 - 189/504 = 252 - 189/504 = 63/504 - After reducing the fraction, the answer is 1/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/56-54/72 84/56-27/72 28/56-81/72