Subtract 3/9 from 8/72
8/72 - 3/9 is -2/9.
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,
8/72 = 8 × 1/72 × 1 = 8/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
3/9 = 3 × 8/9 × 8 = 24/72 - Subtract the two like fractions:
8/72 - 24/72 = 8 - 24/72 = -16/72 - After reducing the fraction, the answer is -2/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/72-3/9 8/72-6/9 8/72-3/18 24/72-3/9 8/72-3/27 40/72-3/9 8/72-15/9 8/72-3/45 56/72-3/9 8/72-21/9 8/72-3/63