Subtract 20/50 from 1/20
1/20 - 20/50 is -7/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 50 is 100
Next, find the equivalent fraction of both fractional numbers with denominator 100 - For the 1st fraction, since 20 × 5 = 100,
1/20 = 1 × 5/20 × 5 = 5/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
20/50 = 20 × 2/50 × 2 = 40/100 - Subtract the two like fractions:
5/100 - 40/100 = 5 - 40/100 = -35/100 - After reducing the fraction, the answer is -7/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 2/20-20/50 1/20-40/50 1/40-20/50 3/20-20/50 1/20-60/50 1/60-20/50 5/20-20/50 7/20-20/50