Subtract 4/24 from 20/30
20/30 - 4/24 is 1/2.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 30 × 4 = 120,
20/30 = 20 × 4/30 × 4 = 80/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
4/24 = 4 × 5/24 × 5 = 20/120 - Subtract the two like fractions:
80/120 - 20/120 = 80 - 20/120 = 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: 40/30-4/24 20/30-8/24 20/60-4/24 20/30-4/48 60/30-4/24 20/30-12/24 20/90-4/24 20/30-4/72 20/30-20/24 20/30-28/24