Subtract 20/7 from 28/14
1st number: 2 0/14, 2nd number: 2 6/7
28/14 - 20/7 is -6/7.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 14 and 7 is 14
Next, find the equivalent fraction of both fractional numbers with denominator 14 - For the 1st fraction, since 14 × 1 = 14,
28/14 = 28 × 1/14 × 1 = 28/14 - Likewise, for the 2nd fraction, since 7 × 2 = 14,
20/7 = 20 × 2/7 × 2 = 40/14 - Subtract the two like fractions:
28/14 - 40/14 = 28 - 40/14 = -12/14 - After reducing the fraction, the answer is -6/7
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/14-20/7 28/14-40/7 28/14-20/14 84/14-20/7 28/14-60/7 28/42-20/7 28/14-20/21 28/70-20/7 28/14-20/35 28/98-20/7 28/14-20/49