Subtract 18/6 from 12/20
1st number: 12/20, 2nd number: 3 0/6
12/20 - 18/6 is -12/5.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 20 and 6 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 20 × 3 = 60,
12/20 = 12 × 3/20 × 3 = 36/60 - Likewise, for the 2nd fraction, since 6 × 10 = 60,
18/6 = 18 × 10/6 × 10 = 180/60 - Subtract the two like fractions:
36/60 - 180/60 = 36 - 180/60 = -144/60 - After reducing the fraction, the answer is -12/5
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/20-18/6 12/20-36/6 12/40-18/6 12/20-18/12 36/20-18/6 12/20-54/6 12/60-18/6 60/20-18/6 12/20-90/6 12/20-18/30 84/20-18/6 12/20-18/42