Subtract 8/12 from 4/28
4/28 - 8/12 is -11/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 28 × 3 = 84,
4/28 = 4 × 3/28 × 3 = 12/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84 - Subtract the two like fractions:
12/84 - 56/84 = 12 - 56/84 = -44/84 - After reducing the fraction, the answer is -11/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/28-8/12 4/28-16/12 4/56-8/12 4/28-8/24 12/28-8/12 4/28-24/12 4/84-8/12 4/28-8/36 20/28-8/12 4/28-40/12 4/28-8/60 4/28-56/12 4/28-8/84