Subtract 27/28 from 1/12
1/12 - 27/28 is -37/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 28 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
1/12 = 1 × 7/12 × 7 = 7/84 - Likewise, for the 2nd fraction, since 28 × 3 = 84,
27/28 = 27 × 3/28 × 3 = 81/84 - Subtract the two like fractions:
7/84 - 81/84 = 7 - 81/84 = -74/84 - After reducing the fraction, the answer is -37/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/12-27/28 1/12-54/28 1/24-27/28 1/12-27/56 3/12-27/28 1/12-81/28 1/36-27/28 1/12-27/84 5/12-27/28 1/60-27/28 7/12-27/28 1/84-27/28