Subtract 10/30 from 20/12
1st number: 1 8/12, 2nd number: 10/30
20/12 - 10/30 is 4/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
20/12 = 20 × 5/12 × 5 = 100/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
10/30 = 10 × 2/30 × 2 = 20/60 - Subtract the two like fractions:
100/60 - 20/60 = 100 - 20/60 = 80/60 - After reducing the fraction, the answer is 4/3
- In mixed form: 11/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-10/30 20/12-20/30 20/24-10/30 20/12-10/60 60/12-10/30 20/36-10/30 20/12-10/90 20/12-50/30 20/60-10/30 20/12-70/30 20/84-10/30