Subtract 9/3 from 40/12
1st number: 3 4/12, 2nd number: 3 0/3
40/12 - 9/3 is 1/3.
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,
9/3 = 9 × 4/3 × 4 = 36/12 - Subtract the two like fractions:
40/12 - 36/12 = 40 - 36/12 = 4/12 - After reducing the fraction, the answer is 1/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-9/3 40/12-18/3 40/24-9/3 40/12-9/6 40/12-27/3 40/36-9/3 40/12-45/3 40/60-9/3 40/12-9/15 40/12-63/3 40/84-9/3 40/12-9/21