Subtract 9/72 from 10/8
1st number: 1 2/8, 2nd number: 9/72
10/8 - 9/72 is 9/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 8 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 8 × 9 = 72,
10/8 = 10 × 9/8 × 9 = 90/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
9/72 = 9 × 1/72 × 1 = 9/72 - Subtract the two like fractions:
90/72 - 9/72 = 90 - 9/72 = 81/72 - After reducing the fraction, the answer is 9/8
- In mixed form: 11/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/8-9/72 10/8-18/72 10/16-9/72 30/8-9/72 10/8-27/72 10/24-9/72 50/8-9/72 10/8-45/72 10/40-9/72 70/8-9/72 10/8-63/72 10/56-9/72