Subtract 9/72 from 10/18
10/18 - 9/72 is 31/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 18 × 4 = 72,
10/18 = 10 × 4/18 × 4 = 40/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
9/72 = 9 × 1/72 × 1 = 9/72 - Subtract the two like fractions:
40/72 - 9/72 = 40 - 9/72 = 31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/18-9/72 10/18-18/72 10/36-9/72 30/18-9/72 10/18-27/72 10/54-9/72 50/18-9/72 10/18-45/72 10/90-9/72 70/18-9/72 10/18-63/72