Subtract 42/12 from 90/24
1st number: 3 18/24, 2nd number: 3 6/12
90/24 - 42/12 is 1/4.
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,
42/12 = 42 × 2/12 × 2 = 84/24 - Subtract the two like fractions:
90/24 - 84/24 = 90 - 84/24 = 6/24 - After reducing the fraction, the answer is 1/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24-84/12 90/48-42/12 90/24-42/24 90/72-42/12 90/24-42/36 90/24-42/60 90/24-42/84