Subtract 3/40 from 5/10
5/10 - 3/40 is 17/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 10 and 40 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 10 × 4 = 40,
5/10 = 5 × 4/10 × 4 = 20/40 - Likewise, for the 2nd fraction, since 40 × 1 = 40,
3/40 = 3 × 1/40 × 1 = 3/40 - Subtract the two like fractions:
20/40 - 3/40 = 20 - 3/40 = 17/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10-6/40 5/20-3/40 5/10-3/80 15/10-3/40 5/10-9/40 5/30-3/40 25/10-3/40 5/10-15/40 5/50-3/40 35/10-3/40 5/10-21/40 5/70-3/40