Subtract 1/9 from 4/72
4/72 - 1/9 is -1/18.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 9 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
4/72 = 4 × 1/72 × 1 = 4/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
1/9 = 1 × 8/9 × 8 = 8/72 - Subtract the two like fractions:
4/72 - 8/72 = 4 - 8/72 = -4/72 - After reducing the fraction, the answer is -1/18
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/72-1/9 4/72-2/9 4/72-1/18 12/72-1/9 4/72-3/9 4/72-1/27 20/72-1/9 4/72-5/9 4/72-1/45 28/72-1/9 4/72-7/9 4/72-1/63