Subtract 7/9 from 25/72
25/72 - 7/9 is -31/72.
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,
25/72 = 25 × 1/72 × 1 = 25/72 - Likewise, for the 2nd fraction, since 9 × 8 = 72,
7/9 = 7 × 8/9 × 8 = 56/72 - Subtract the two like fractions:
25/72 - 56/72 = 25 - 56/72 = -31/72
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 50/72-7/9 25/72-14/9 25/72-7/18 75/72-7/9 25/72-21/9 25/72-7/27 25/72-35/9 25/72-7/45 25/72-49/9 25/72-7/63