Subtract 40/12 from 28/25
1st number: 1 3/25, 2nd number: 3 4/12
28/25 - 40/12 is -166/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 12 is 300
Next, find the equivalent fraction of both fractional numbers with denominator 300 - For the 1st fraction, since 25 × 12 = 300,
28/25 = 28 × 12/25 × 12 = 336/300 - Likewise, for the 2nd fraction, since 12 × 25 = 300,
40/12 = 40 × 25/12 × 25 = 1000/300 - Subtract the two like fractions:
336/300 - 1000/300 = 336 - 1000/300 = -664/300 - After reducing the fraction, the answer is -166/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 56/25-40/12 28/25-80/12 28/50-40/12 28/25-40/24 84/25-40/12 28/75-40/12 28/25-40/36 28/25-40/60 28/25-40/84