Subtract 25/36 from 28/72
28/72 - 25/36 is -11/36.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 36 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
28/72 = 28 × 1/72 × 1 = 28/72 - Likewise, for the 2nd fraction, since 36 × 2 = 72,
25/36 = 25 × 2/36 × 2 = 50/72 - Subtract the two like fractions:
28/72 - 50/72 = 28 - 50/72 = -22/72 - After reducing the fraction, the answer is -11/36
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/72-25/36 28/72-50/36 28/72-25/72 84/72-25/36 28/72-75/36