Subtract 9/40 from 5/10
5/10 - 9/40 is 11/40.
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,
9/40 = 9 × 1/40 × 1 = 9/40 - Subtract the two like fractions:
20/40 - 9/40 = 20 - 9/40 = 11/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 5/10-18/40 5/20-9/40 5/10-9/80 15/10-9/40 5/10-27/40 5/30-9/40 25/10-9/40 5/10-45/40 5/50-9/40 35/10-9/40 5/10-63/40 5/70-9/40