Subtract 5/10 from 7/40
7/40 - 5/10 is -13/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 40 and 10 is 40
Next, find the equivalent fraction of both fractional numbers with denominator 40 - For the 1st fraction, since 40 × 1 = 40,
7/40 = 7 × 1/40 × 1 = 7/40 - Likewise, for the 2nd fraction, since 10 × 4 = 40,
5/10 = 5 × 4/10 × 4 = 20/40 - Subtract the two like fractions:
7/40 - 20/40 = 7 - 20/40 = -13/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 14/40-5/10 7/80-5/10 7/40-5/20 21/40-5/10 7/40-15/10 7/40-5/30 35/40-5/10 7/40-25/10 7/40-5/50 49/40-5/10 7/40-35/10 7/40-5/70