Subtract 5/12 from 28/42
28/42 - 5/12 is 1/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 12 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
28/42 = 28 × 2/42 × 2 = 56/84 - Likewise, for the 2nd fraction, since 12 × 7 = 84,
5/12 = 5 × 7/12 × 7 = 35/84 - Subtract the two like fractions:
56/84 - 35/84 = 56 - 35/84 = 21/84 - After reducing the fraction, the answer is 1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/42-5/12 28/42-10/12 28/84-5/12 28/42-5/24 84/42-5/12 28/42-15/12 28/42-5/36 28/42-25/12 28/42-5/60 28/42-35/12 28/42-5/84