Subtract 40/21 from 8/25
1st number: 8/25, 2nd number: 1 19/21
8/25 - 40/21 is -832/525.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 21 is 525
Next, find the equivalent fraction of both fractional numbers with denominator 525 - For the 1st fraction, since 25 × 21 = 525,
8/25 = 8 × 21/25 × 21 = 168/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
40/21 = 40 × 25/21 × 25 = 1000/525 - Subtract the two like fractions:
168/525 - 1000/525 = 168 - 1000/525 = -832/525
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/25-40/21 8/25-80/21 8/50-40/21 8/25-40/42 24/25-40/21 8/75-40/21 8/25-40/63 40/25-40/21 56/25-40/21