Subtract 30/56 from 56/72
56/72 - 30/56 is 61/252.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 56 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
56/72 = 56 × 7/72 × 7 = 392/504 - Likewise, for the 2nd fraction, since 56 × 9 = 504,
30/56 = 30 × 9/56 × 9 = 270/504 - Subtract the two like fractions:
392/504 - 270/504 = 392 - 270/504 = 122/504 - After reducing the fraction, the answer is 61/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72-60/56 56/72-90/56