Subtract 1/14 from 20/42
20/42 - 1/14 is 17/42.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 14 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 42 × 1 = 42,
20/42 = 20 × 1/42 × 1 = 20/42 - Likewise, for the 2nd fraction, since 14 × 3 = 42,
1/14 = 1 × 3/14 × 3 = 3/42 - Subtract the two like fractions:
20/42 - 3/42 = 20 - 3/42 = 17/42
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/42-1/14 20/42-2/14 20/84-1/14 20/42-1/28 60/42-1/14 20/42-3/14 20/42-1/42 20/42-5/14 20/42-1/70 20/42-7/14 20/42-1/98