Subtract 9/72 from 12/24
12/24 - 9/72 is 3/8.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 72 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 24 × 3 = 72,
12/24 = 12 × 3/24 × 3 = 36/72 - Likewise, for the 2nd fraction, since 72 × 1 = 72,
9/72 = 9 × 1/72 × 1 = 9/72 - Subtract the two like fractions:
36/72 - 9/72 = 36 - 9/72 = 27/72 - After reducing the fraction, the answer is 3/8
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/24-18/72 12/48-9/72 36/24-9/72 12/24-27/72 12/72-9/72 60/24-9/72 12/24-45/72 84/24-9/72 12/24-63/72