Subtract 6/84 from 4/42
4/42 - 6/84 is 1/42.
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,
4/42 = 4 × 2/42 × 2 = 8/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
6/84 = 6 × 1/84 × 1 = 6/84 - Subtract the two like fractions:
8/84 - 6/84 = 8 - 6/84 = 2/84 - After reducing the fraction, the answer is 1/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/42-6/84 4/42-12/84 4/84-6/84 12/42-6/84 4/42-18/84 20/42-6/84 4/42-30/84 28/42-6/84 4/42-42/84