Subtract 40/12 from 90/24
1st number: 3 18/24, 2nd number: 3 4/12
90/24 - 40/12 is 5/12.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 12 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 24 × 1 = 24,
90/24 = 90 × 1/24 × 1 = 90/24 - Likewise, for the 2nd fraction, since 12 × 2 = 24,
40/12 = 40 × 2/12 × 2 = 80/24 - Subtract the two like fractions:
90/24 - 80/24 = 90 - 80/24 = 10/24 - After reducing the fraction, the answer is 5/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24-80/12 90/48-40/12 90/24-40/24 90/72-40/12 90/24-40/36 90/24-40/60 90/24-40/84