Subtract 25/84 from 6/42
6/42 - 25/84 is -13/84.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 42 × 2 = 84,
6/42 = 6 × 2/42 × 2 = 12/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
25/84 = 25 × 1/84 × 1 = 25/84 - Subtract the two like fractions:
12/84 - 25/84 = 12 - 25/84 = -13/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/42-25/84 6/42-50/84 6/84-25/84 18/42-25/84 6/42-75/84 30/42-25/84