Subtract 9/30 from 18/24
18/24 - 9/30 is 9/20.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
18/24 = 18 × 5/24 × 5 = 90/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
9/30 = 9 × 4/30 × 4 = 36/120 - Subtract the two like fractions:
90/120 - 36/120 = 90 - 36/120 = 54/120 - After reducing the fraction, the answer is 9/20
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/24-9/30 18/24-18/30 18/48-9/30 18/24-9/60 54/24-9/30 18/24-27/30 18/72-9/30 18/24-9/90 90/24-9/30 18/24-45/30 18/24-63/30