Subtract 30/5 from 20/12
1st number: 1 8/12, 2nd number: 6 0/5
20/12 - 30/5 is -13/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 5 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 5 × 12 = 60,
30/5 = 30 × 12/5 × 12 = 360/60 - Subtract the two like fractions:
100/60 - 360/60 = 100 - 360/60 = -260/60 - After reducing the fraction, the answer is -13/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 40/12-30/5 20/12-60/5 20/24-30/5 20/12-30/10 60/12-30/5 20/12-90/5 20/36-30/5 20/12-30/15 20/60-30/5 20/12-30/25 20/84-30/5 20/12-30/35