Subtract 4/72 from 20/7
1st number: 2 6/7, 2nd number: 4/72
20/7 - 4/72 is 353/126.
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,
20/7 = 20 × 72/7 × 72 = 1440/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
4/72 = 4 × 7/72 × 7 = 28/504 - Subtract the two like fractions:
1440/504 - 28/504 = 1440 - 28/504 = 1412/504 - After reducing the fraction, the answer is 353/126
- In mixed form: 2101/126
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/7-4/72 20/7-8/72 20/14-4/72 60/7-4/72 20/7-12/72 20/21-4/72 20/7-20/72 20/35-4/72 20/7-28/72 20/49-4/72