Subtract 36/40 from 20/24
20/24 - 36/40 is -1/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
20/24 = 20 × 5/24 × 5 = 100/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
36/40 = 36 × 3/40 × 3 = 108/120 - Subtract the two like fractions:
100/120 - 108/120 = 100 - 108/120 = -8/120 - After reducing the fraction, the answer is -1/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24-36/40 20/24-72/40 20/48-36/40 20/24-36/80 60/24-36/40 20/72-36/40