Subtract 54/72 from 2/7
2/7 - 54/72 is -13/28.
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,
2/7 = 2 × 72/7 × 72 = 144/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
54/72 = 54 × 7/72 × 7 = 378/504 - Subtract the two like fractions:
144/504 - 378/504 = 144 - 378/504 = -234/504 - After reducing the fraction, the answer is -13/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/7-54/72 2/14-54/72 6/7-54/72 2/21-54/72 10/7-54/72 2/35-54/72 14/7-54/72 2/49-54/72