Subtract 40/3 from 18/12
1st number: 1 6/12, 2nd number: 13 1/3
18/12 - 40/3 is -71/6.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 3 is 12
Next, find the equivalent fraction of both fractional numbers with denominator 12 - For the 1st fraction, since 12 × 1 = 12,
18/12 = 18 × 1/12 × 1 = 18/12 - Likewise, for the 2nd fraction, since 3 × 4 = 12,
40/3 = 40 × 4/3 × 4 = 160/12 - Subtract the two like fractions:
18/12 - 160/12 = 18 - 160/12 = -142/12 - After reducing the fraction, the answer is -71/6
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 36/12-40/3 18/12-80/3 18/24-40/3 18/12-40/6 54/12-40/3 18/36-40/3 18/12-40/9 90/12-40/3 18/60-40/3 18/12-40/15 18/84-40/3 18/12-40/21