Subtract 6/42 from 7/28
7/28 - 6/42 is 3/28.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 42 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 42 × 2 = 84,
6/42 = 6 × 2/42 × 2 = 12/84 - Subtract the two like fractions:
21/84 - 12/84 = 21 - 12/84 = 9/84 - After reducing the fraction, the answer is 3/28
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-6/42 7/28-12/42 7/56-6/42 7/28-6/84 21/28-6/42 7/28-18/42 7/84-6/42 35/28-6/42 7/28-30/42 49/28-6/42