Subtract 15/72 from 4/9
4/9 - 15/72 is 17/72.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 9 × 8 = 72,
4/9 = 4 × 8/9 × 8 = 32/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
15/72 = 15 × 1/72 × 1 = 15/72 - Subtract the two like fractions:
32/72 - 15/72 = 32 - 15/72 = 17/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/9-15/72 4/9-30/72 4/18-15/72 12/9-15/72 4/9-45/72 4/27-15/72 20/9-15/72 4/9-75/72 4/45-15/72 28/9-15/72 4/63-15/72