Subtract 15/27 from 40/12
1st number: 3 4/12, 2nd number: 15/27
40/12 - 15/27 is 25/9.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 27 is 108
Next, find the equivalent fraction of both fractional numbers with denominator 108 - For the 1st fraction, since 12 × 9 = 108,
40/12 = 40 × 9/12 × 9 = 360/108 - Likewise, for the 2nd fraction, since 27 × 4 = 108,
15/27 = 15 × 4/27 × 4 = 60/108 - Subtract the two like fractions:
360/108 - 60/108 = 360 - 60/108 = 300/108 - After reducing the fraction, the answer is 25/9
- In mixed form: 27/9
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/12-15/27 40/12-30/27 40/24-15/27 40/12-15/54 40/12-45/27 40/36-15/27 40/12-15/81 40/12-75/27 40/60-15/27 40/84-15/27