Subtract 45/30 from 90/24
1st number: 3 18/24, 2nd number: 1 15/30
90/24 - 45/30 is 9/4.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 24 and 30 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 24 × 5 = 120,
90/24 = 90 × 5/24 × 5 = 450/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
45/30 = 45 × 4/30 × 4 = 180/120 - Subtract the two like fractions:
450/120 - 180/120 = 450 - 180/120 = 270/120 - After reducing the fraction, the answer is 9/4
- In mixed form: 21/4
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24-90/30 90/48-45/30 90/24-45/60 90/72-45/30 90/24-45/90