Subtract 1/21 from 14/42
14/42 - 1/21 is 2/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 21 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
14/42 = 14 × 1/42 × 1 = 14/42 - Likewise, for the 2nd fraction, since 21 × 2 = 42,
1/21 = 1 × 2/21 × 2 = 2/42 - Subtract the two like fractions:
14/42 - 2/42 = 14 - 2/42 = 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: 28/42-1/21 14/42-2/21 14/84-1/21 14/42-1/42 14/42-3/21 14/42-1/63 70/42-1/21 14/42-5/21 98/42-1/21 14/42-7/21