Subtract 24/12 from 18/30
1st number: 18/30, 2nd number: 2 0/12
18/30 - 24/12 is -7/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 30 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 30 × 2 = 60,
18/30 = 18 × 2/30 × 2 = 36/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
24/12 = 24 × 5/12 × 5 = 120/60 - Subtract the two like fractions:
36/60 - 120/60 = 36 - 120/60 = -84/60 - After reducing the fraction, the answer is -7/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/30-24/12 18/30-48/12 18/60-24/12 54/30-24/12 18/30-72/12 18/90-24/12 18/30-24/36 90/30-24/12 18/30-24/60 18/30-24/84