Subtract 90/24 from 42/2
1st number: 21 0/2, 2nd number: 3 18/24
42/2 - 90/24 is 69/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 24 is 24
Next, find the equivalent fraction of both fractional numbers with denominator 24 - For the 1st fraction, since 2 × 12 = 24,
42/2 = 42 × 12/2 × 12 = 504/24 - Likewise, for the 2nd fraction, since 24 × 1 = 24,
90/24 = 90 × 1/24 × 1 = 90/24 - Subtract the two like fractions:
504/24 - 90/24 = 504 - 90/24 = 414/24 - After reducing the fraction, the answer is 69/4
- In mixed form: 171/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/2-90/24 42/4-90/24 42/2-90/48 42/6-90/24 42/2-90/72 42/10-90/24 42/14-90/24