Subtract 18/24 from 5/20
5/20 - 18/24 is -1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 20 × 6 = 120,
5/20 = 5 × 6/20 × 6 = 30/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120 - Subtract the two like fractions:
30/120 - 90/120 = 30 - 90/120 = -60/120 - After reducing the fraction, the answer is -1/2
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 10/20-18/24 5/20-36/24 5/40-18/24 5/20-18/48 15/20-18/24 5/20-54/24 5/60-18/24 5/20-18/72 25/20-18/24 5/20-90/24 35/20-18/24