Subtract 3/6 from 9/42
9/42 - 3/6 is -2/7.
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,
9/42 = 9 × 1/42 × 1 = 9/42 - Likewise, for the 2nd fraction, since 6 × 7 = 42,
3/6 = 3 × 7/6 × 7 = 21/42 - Subtract the two like fractions:
9/42 - 21/42 = 9 - 21/42 = -12/42 - After reducing the fraction, the answer is -2/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42-3/6 9/84-3/6 9/42-3/12 27/42-3/6 9/42-9/6 9/42-3/18 45/42-3/6 9/42-15/6 9/42-3/30 63/42-3/6 9/42-21/6 9/42-3/42