Subtract 7/15 from 40/12
1st number: 3 4/12, 2nd number: 7/15
40/12 - 7/15 is 43/15.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 15 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60 - Likewise, for the 2nd fraction, since 15 × 4 = 60,
7/15 = 7 × 4/15 × 4 = 28/60 - Subtract the two like fractions:
200/60 - 28/60 = 200 - 28/60 = 172/60 - After reducing the fraction, the answer is 43/15
- In mixed form: 213/15
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-7/15 40/12-14/15 40/24-7/15 40/12-7/30 40/12-21/15 40/36-7/15 40/12-7/45 40/12-35/15 40/60-7/15 40/12-7/75 40/12-49/15 40/84-7/15