Subtract 8/12 from 7/28
7/28 - 8/12 is -5/12.
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,
7/28 = 7 × 3/28 × 3 = 21/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
8/12 = 8 × 7/12 × 7 = 56/84 - Subtract the two like fractions:
21/84 - 56/84 = 21 - 56/84 = -35/84 - After reducing the fraction, the answer is -5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-8/12 7/28-16/12 7/56-8/12 7/28-8/24 21/28-8/12 7/28-24/12 7/84-8/12 7/28-8/36 35/28-8/12 7/28-40/12 7/28-8/60 49/28-8/12 7/28-56/12 7/28-8/84