Subtract 28/3 from 40/12
1st number: 3 4/12, 2nd number: 9 1/3
40/12 - 28/3 is -6/1.
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,
40/12 = 40 × 1/12 × 1 = 40/12 - Likewise, for the 2nd fraction, since 3 × 4 = 12,
28/3 = 28 × 4/3 × 4 = 112/12 - Subtract the two like fractions:
40/12 - 112/12 = 40 - 112/12 = -72/12 - After reducing the fraction, the answer is -6/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-28/3 40/12-56/3 40/24-28/3 40/12-28/6 40/12-84/3 40/36-28/3 40/12-28/9 40/60-28/3 40/12-28/15 40/84-28/3 40/12-28/21