Subtract 28/14 from 7/20
1st number: 7/20, 2nd number: 2 0/14
7/20 - 28/14 is -33/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 14 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 20 × 7 = 140,
7/20 = 7 × 7/20 × 7 = 49/140 - Likewise, for the 2nd fraction, since 14 × 10 = 140,
28/14 = 28 × 10/14 × 10 = 280/140 - Subtract the two like fractions:
49/140 - 280/140 = 49 - 280/140 = -231/140 - After reducing the fraction, the answer is -33/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/20-28/14 7/20-56/14 7/40-28/14 21/20-28/14 7/20-84/14 7/60-28/14 7/20-28/42 35/20-28/14 7/20-28/70 49/20-28/14 7/20-28/98