Subtract 4/50 from 3/20
3/20 - 4/50 is 7/100.
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,
3/20 = 3 × 5/20 × 5 = 15/100 - Likewise, for the 2nd fraction, since 50 × 2 = 100,
4/50 = 4 × 2/50 × 2 = 8/100 - Subtract the two like fractions:
15/100 - 8/100 = 15 - 8/100 = 7/100
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 6/20-4/50 3/20-8/50 3/40-4/50 9/20-4/50 3/20-12/50 3/60-4/50 15/20-4/50 3/20-20/50 21/20-4/50 3/20-28/50