Subtract 25/12 from 20/30
1st number: 20/30, 2nd number: 2 1/12
20/30 - 25/12 is -17/12.
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,
20/30 = 20 × 2/30 × 2 = 40/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
25/12 = 25 × 5/12 × 5 = 125/60 - Subtract the two like fractions:
40/60 - 125/60 = 40 - 125/60 = -85/60 - After reducing the fraction, the answer is -17/12
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/30-25/12 20/30-50/12 20/60-25/12 20/30-25/24 60/30-25/12 20/30-75/12 20/90-25/12 20/30-25/36 20/30-25/60 20/30-25/84