Subtract 2/3 from 9/42
9/42 - 2/3 is -19/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 3 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 3 × 14 = 42,
2/3 = 2 × 14/3 × 14 = 28/42 - Subtract the two like fractions:
9/42 - 28/42 = 9 - 28/42 = -19/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/42-2/3 9/42-4/3 9/84-2/3 9/42-2/6 27/42-2/3 9/42-6/3 9/42-2/9 45/42-2/3 9/42-10/3 9/42-2/15 63/42-2/3 9/42-14/3 9/42-2/21