Subtract 7/72 from 4/7
4/7 - 7/72 is 239/504.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 7 × 72 = 504,
4/7 = 4 × 72/7 × 72 = 288/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Subtract the two like fractions:
288/504 - 49/504 = 288 - 49/504 = 239/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/7-7/72 4/7-14/72 4/14-7/72 12/7-7/72 4/7-21/72 4/21-7/72 20/7-7/72 4/7-35/72 4/35-7/72 28/7-7/72 4/7-49/72 4/49-7/72