Subtract 27/30 from 45/24
1st number: 1 21/24, 2nd number: 27/30
45/24 - 27/30 is 39/40.
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,
45/24 = 45 × 5/24 × 5 = 225/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
27/30 = 27 × 4/30 × 4 = 108/120 - Subtract the two like fractions:
225/120 - 108/120 = 225 - 108/120 = 117/120 - After reducing the fraction, the answer is 39/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 90/24-27/30 45/24-54/30 45/48-27/30 45/24-27/60 45/24-81/30 45/72-27/30 45/24-27/90