Subtract 28/42 from 20/14
1st number: 1 6/14, 2nd number: 28/42
20/14 - 28/42 is 16/21.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 42 is 42
Next, find the equivalent fraction of both fractional numbers with denominator 42 - For the 1st fraction, since 14 × 3 = 42,
20/14 = 20 × 3/14 × 3 = 60/42 - Likewise, for the 2nd fraction, since 42 × 1 = 42,
28/42 = 28 × 1/42 × 1 = 28/42 - Subtract the two like fractions:
60/42 - 28/42 = 60 - 28/42 = 32/42 - After reducing the fraction, the answer is 16/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/14-28/42 20/14-56/42 20/28-28/42 20/14-28/84 60/14-28/42 20/14-84/42 20/42-28/42 20/70-28/42 20/98-28/42