Subtract 7/12 from 9/72
9/72 - 7/12 is -11/24.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 12 is 72
Next, find the equivalent fraction of both fractional numbers with denominator 72 - For the 1st fraction, since 72 × 1 = 72,
9/72 = 9 × 1/72 × 1 = 9/72 - Likewise, for the 2nd fraction, since 12 × 6 = 72,
7/12 = 7 × 6/12 × 6 = 42/72 - Subtract the two like fractions:
9/72 - 42/72 = 9 - 42/72 = -33/72 - After reducing the fraction, the answer is -11/24
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/72-7/12 9/72-14/12 9/72-7/24 27/72-7/12 9/72-21/12 9/72-7/36 45/72-7/12 9/72-35/12 9/72-7/60 63/72-7/12 9/72-49/12 9/72-7/84