Subtract 9/72 from 70/7
1st number: 10 0/7, 2nd number: 9/72
70/7 - 9/72 is 79/8.
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,
70/7 = 70 × 72/7 × 72 = 5040/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
9/72 = 9 × 7/72 × 7 = 63/504 - Subtract the two like fractions:
5040/504 - 63/504 = 5040 - 63/504 = 4977/504 - After reducing the fraction, the answer is 79/8
- In mixed form: 97/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/7-18/72 70/14-9/72 70/7-27/72 70/21-9/72 70/7-45/72 70/35-9/72 70/7-63/72 70/49-9/72