Subtract 45/24 from 42/60
1st number: 42/60, 2nd number: 1 21/24
42/60 - 45/24 is -47/40.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 24 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
42/60 = 42 × 2/60 × 2 = 84/120 - Likewise, for the 2nd fraction, since 24 × 5 = 120,
45/24 = 45 × 5/24 × 5 = 225/120 - Subtract the two like fractions:
84/120 - 225/120 = 84 - 225/120 = -141/120 - After reducing the fraction, the answer is -47/40
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/60-45/24 42/60-90/24 42/60-45/48 42/60-45/72