Subtract 10/40 from 20/24
20/24 - 10/40 is 7/12.
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,
10/40 = 10 × 3/40 × 3 = 30/120 - Subtract the two like fractions:
100/120 - 30/120 = 100 - 30/120 = 70/120 - After reducing the fraction, the answer is 7/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/24-10/40 20/24-20/40 20/48-10/40 20/24-10/80 60/24-10/40 20/24-30/40 20/72-10/40 20/24-50/40 20/24-70/40