Subtract 49/72 from 3/9
3/9 - 49/72 is -25/72.
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,
3/9 = 3 × 8/9 × 8 = 24/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
49/72 = 49 × 1/72 × 1 = 49/72 - Subtract the two like fractions:
24/72 - 49/72 = 24 - 49/72 = -25/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/9-49/72 3/9-98/72 3/18-49/72 3/27-49/72 15/9-49/72 3/45-49/72 21/9-49/72 3/63-49/72