Subtract 80/60 from 12/18
1st number: 12/18, 2nd number: 1 20/60
12/18 - 80/60 is -2/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 60 is 180
Next, find the equivalent fraction of both fractional numbers with denominator 180 - For the 1st fraction, since 18 × 10 = 180,
12/18 = 12 × 10/18 × 10 = 120/180 - Likewise, for the 2nd fraction, since 60 × 3 = 180,
80/60 = 80 × 3/60 × 3 = 240/180 - Subtract the two like fractions:
120/180 - 240/180 = 120 - 240/180 = -120/180 - After reducing the fraction, the answer is -2/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 24/18-80/60 12/36-80/60 36/18-80/60 12/54-80/60 60/18-80/60 12/90-80/60 84/18-80/60