Subtract 5/20 from 14/42
14/42 - 5/20 is 1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 42 and 20 is 420
Next, find the equivalent fraction of both fractional numbers with denominator 420 - For the 1st fraction, since 42 × 10 = 420,
14/42 = 14 × 10/42 × 10 = 140/420 - Likewise, for the 2nd fraction, since 20 × 21 = 420,
5/20 = 5 × 21/20 × 21 = 105/420 - Subtract the two like fractions:
140/420 - 105/420 = 140 - 105/420 = 35/420 - After reducing the fraction, the answer is 1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 28/42-5/20 14/42-10/20 14/84-5/20 14/42-5/40 14/42-15/20 14/42-5/60 70/42-5/20 14/42-25/20 98/42-5/20 14/42-35/20