Subtract 10/80 from 2/40
2/40 - 10/80 is -3/40.
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,
2/40 = 2 × 2/40 × 2 = 4/80 - Likewise, for the 2nd fraction, since 80 × 1 = 80,
10/80 = 10 × 1/80 × 1 = 10/80 - Subtract the two like fractions:
4/80 - 10/80 = 4 - 10/80 = -6/80 - After reducing the fraction, the answer is -3/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 4/40-10/80 2/40-20/80 2/80-10/80 6/40-10/80 2/40-30/80 10/40-10/80 2/40-50/80 14/40-10/80 2/40-70/80