Subtract 18/21 from 36/25
1st number: 1 11/25, 2nd number: 18/21
36/25 - 18/21 is 102/175.
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,
36/25 = 36 × 21/25 × 21 = 756/525 - Likewise, for the 2nd fraction, since 21 × 25 = 525,
18/21 = 18 × 25/21 × 25 = 450/525 - Subtract the two like fractions:
756/525 - 450/525 = 756 - 450/525 = 306/525 - After reducing the fraction, the answer is 102/175
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 72/25-18/21 36/25-36/21 36/50-18/21 36/25-18/42 36/25-54/21 36/75-18/21 36/25-18/63 36/25-90/21