Subtract 3/6 from 1/42
1/42 - 3/6 is -10/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 6 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
1/42 = 1 × 1/42 × 1 = 1/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
3/6 = 3 × 7/6 × 7 = 21/42 - Subtract the two like fractions:
1/42 - 21/42 = 1 - 21/42 = -20/42 - After reducing the fraction, the answer is -10/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/42-3/6 1/84-3/6 1/42-3/12 3/42-3/6 1/42-9/6 1/42-3/18 5/42-3/6 1/42-15/6 1/42-3/30 7/42-3/6 1/42-21/6 1/42-3/42