Subtract 2/40 from 4/20
4/20 - 2/40 is 3/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 20 × 2 = 40,
4/20 = 4 × 2/20 × 2 = 8/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
2/40 = 2 × 1/40 × 1 = 2/40 - Subtract the two like fractions:
8/40 - 2/40 = 8 - 2/40 = 6/40 - 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: 8/20-2/40 4/20-4/40 4/40-2/40 4/20-2/80 12/20-2/40 4/20-6/40 4/60-2/40 4/20-10/40 28/20-2/40 4/20-14/40