Subtract 40/20 from 1/5
1st number: 1/5, 2nd number: 2 0/20
1/5 - 40/20 is -9/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 20 is 20
Next, find the equivalent fraction of both fractional numbers with denominator 20 - For the 1st fraction, since 5 × 4 = 20,
1/5 = 1 × 4/5 × 4 = 4/20 - Likewise, for the 2nd fraction, since 20 × 1 = 20,
40/20 = 40 × 1/20 × 1 = 40/20 - Subtract the two like fractions:
4/20 - 40/20 = 4 - 40/20 = -36/20 - After reducing the fraction, the answer is -9/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/5-40/20 1/5-80/20 1/10-40/20 3/5-40/20 1/15-40/20 1/5-40/60 1/25-40/20 7/5-40/20 1/35-40/20