Subtract 7/20 from 14/28
14/28 - 7/20 is 3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 28 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 28 × 5 = 140,
14/28 = 14 × 5/28 × 5 = 70/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
7/20 = 7 × 7/20 × 7 = 49/140 - Subtract the two like fractions:
70/140 - 49/140 = 70 - 49/140 = 21/140 - After reducing the fraction, the answer is 3/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/28-14/20 14/56-7/20 14/28-7/40 42/28-7/20 14/28-21/20 14/84-7/20 14/28-7/60 70/28-7/20 14/28-35/20 98/28-7/20 14/28-49/20