Subtract 18/24 from 40/60
40/60 - 18/24 is -1/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
40/60 = 40 × 2/60 × 2 = 80/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120 - Subtract the two like fractions:
80/120 - 90/120 = 80 - 90/120 = -10/120 - After reducing the fraction, the answer is -1/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/60-18/24 40/60-36/24 40/60-18/48 40/60-54/24 40/60-18/72 40/60-90/24