Subtract 5/72 from 3/7
3/7 - 5/72 is 181/504.
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,
3/7 = 3 × 72/7 × 72 = 216/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
5/72 = 5 × 7/72 × 7 = 35/504 - Subtract the two like fractions:
216/504 - 35/504 = 216 - 35/504 = 181/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/7-5/72 3/7-10/72 3/14-5/72 9/7-5/72 3/7-15/72 3/21-5/72 15/7-5/72 3/7-25/72 3/35-5/72 21/7-5/72 3/7-35/72 3/49-5/72