Subtract 3/80 from 4/40
4/40 - 3/80 is 1/16.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 80 is 80
Next, find the equivalent fraction of both fractional numbers with denominator 80 - For the 1st fraction, since 40 × 2 = 80,
4/40 = 4 × 2/40 × 2 = 8/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
3/80 = 3 × 1/80 × 1 = 3/80 - Subtract the two like fractions:
8/80 - 3/80 = 8 - 3/80 = 5/80 - After reducing the fraction, the answer is 1/16
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 8/40-3/80 4/40-6/80 4/80-3/80 12/40-3/80 4/40-9/80 20/40-3/80 4/40-15/80 28/40-3/80 4/40-21/80