Subtract 1/7 from 4/72
4/72 - 1/7 is -11/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 7 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504 - Likewise, for the 2nd fraction, since 7 × 72 = 504,
1/7 = 1 × 72/7 × 72 = 72/504 - Subtract the two like fractions:
28/504 - 72/504 = 28 - 72/504 = -44/504 - After reducing the fraction, the answer is -11/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/72-1/7 4/72-2/7 4/72-1/14 12/72-1/7 4/72-3/7 4/72-1/21 20/72-1/7 4/72-5/7 4/72-1/35 28/72-1/7 4/72-1/49