Subtract 30/20 from 8/12
1st number: 8/12, 2nd number: 1 10/20
8/12 - 30/20 is -5/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 20 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
8/12 = 8 × 5/12 × 5 = 40/60 - Likewise, for the 2nd fraction, since 20 × 3 = 60,
30/20 = 30 × 3/20 × 3 = 90/60 - Subtract the two like fractions:
40/60 - 90/60 = 40 - 90/60 = -50/60 - After reducing the fraction, the answer is -5/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/12-30/20 8/12-60/20 8/24-30/20 8/12-30/40 24/12-30/20 8/12-90/20 8/36-30/20 8/12-30/60 40/12-30/20 8/60-30/20 56/12-30/20 8/84-30/20