Subtract 50/30 from 18/12
1st number: 1 6/12, 2nd number: 1 20/30
18/12 - 50/30 is -1/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 30 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
18/12 = 18 × 5/12 × 5 = 90/60 - Likewise, for the 2nd fraction, since 30 × 2 = 60,
50/30 = 50 × 2/30 × 2 = 100/60 - Subtract the two like fractions:
90/60 - 100/60 = 90 - 100/60 = -10/60 - After reducing the fraction, the answer is -1/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-50/30 18/24-50/30 18/12-50/60 54/12-50/30 18/36-50/30 18/12-50/90 90/12-50/30 18/60-50/30 18/84-50/30