Subtract 7/72 from 1/7
1/7 - 7/72 is 23/504.
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,
1/7 = 1 × 72/7 × 72 = 72/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
7/72 = 7 × 7/72 × 7 = 49/504 - Subtract the two like fractions:
72/504 - 49/504 = 72 - 49/504 = 23/504
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/7-7/72 1/7-14/72 1/14-7/72 3/7-7/72 1/7-21/72 1/21-7/72 5/7-7/72 1/7-35/72 1/35-7/72 1/7-49/72 1/49-7/72