Subtract 40/12 from 10/15
1st number: 10/15, 2nd number: 3 4/12
10/15 - 40/12 is -8/3.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 12 is 60
Next, find the equivalent fraction of both fractional numbers with denominator 60 - For the 1st fraction, since 15 × 4 = 60,
10/15 = 10 × 4/15 × 4 = 40/60 - Likewise, for the 2nd fraction, since 12 × 5 = 60,
40/12 = 40 × 5/12 × 5 = 200/60 - Subtract the two like fractions:
40/60 - 200/60 = 40 - 200/60 = -160/60 - After reducing the fraction, the answer is -8/3
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/15-40/12 10/15-80/12 10/30-40/12 10/15-40/24 30/15-40/12 10/45-40/12 10/15-40/36 50/15-40/12 10/75-40/12 10/15-40/60 70/15-40/12 10/15-40/84