Subtract 45/30 from 12/24
1st number: 12/24, 2nd number: 1 15/30
12/24 - 45/30 is -1/1.
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,
12/24 = 12 × 5/24 × 5 = 60/120 - Likewise, for the 2nd fraction, since 30 × 4 = 120,
45/30 = 45 × 4/30 × 4 = 180/120 - Subtract the two like fractions:
60/120 - 180/120 = 60 - 180/120 = -120/120 - After reducing the fraction, the answer is -1/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/24-90/30 12/48-45/30 12/24-45/60 36/24-45/30 12/72-45/30 12/24-45/90 60/24-45/30 84/24-45/30