Subtract 3/6 from 7/20
7/20 - 3/6 is -3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 6 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 6 × 10 = 60,
3/6 = 3 × 10/6 × 10 = 30/60 - Subtract the two like fractions:
21/60 - 30/60 = 21 - 30/60 = -9/60 - 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: 14/20-3/6 7/40-3/6 7/20-3/12 21/20-3/6 7/20-9/6 7/60-3/6 7/20-3/18 35/20-3/6 7/20-15/6 7/20-3/30 49/20-3/6 7/20-21/6 7/20-3/42