Subtract 10/72 from 9/7
1st number: 1 2/7, 2nd number: 10/72
9/7 - 10/72 is 289/252.
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,
9/7 = 9 × 72/7 × 72 = 648/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
10/72 = 10 × 7/72 × 7 = 70/504 - Subtract the two like fractions:
648/504 - 70/504 = 648 - 70/504 = 578/504 - After reducing the fraction, the answer is 289/252
- In mixed form: 137/252
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/7-10/72 9/7-20/72 9/14-10/72 27/7-10/72 9/7-30/72 9/21-10/72 45/7-10/72 9/7-50/72 9/35-10/72 63/7-10/72 9/7-70/72 9/49-10/72