Subtract 3/72 from 5/18
5/18 - 3/72 is 17/72.
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,
5/18 = 5 × 4/18 × 4 = 20/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
3/72 = 3 × 1/72 × 1 = 3/72 - Subtract the two like fractions:
20/72 - 3/72 = 20 - 3/72 = 17/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/18-3/72 5/18-6/72 5/36-3/72 15/18-3/72 5/18-9/72 5/54-3/72 25/18-3/72 5/18-15/72 5/90-3/72 35/18-3/72 5/18-21/72