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