Subtract 21/9 from 84/75
1st number: 1 9/75, 2nd number: 2 3/9
84/75 - 21/9 is -91/75.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 9 is 225
Next, find the equivalent fraction of both fractional numbers with denominator 225 - For the 1st fraction, since 75 × 3 = 225,
84/75 = 84 × 3/75 × 3 = 252/225 - Likewise, for the 2nd fraction, since 9 × 25 = 225,
21/9 = 21 × 25/9 × 25 = 525/225 - Subtract the two like fractions:
252/225 - 525/225 = 252 - 525/225 = -273/225 - After reducing the fraction, the answer is -91/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 84/75-42/9 84/75-21/18 84/75-63/9 84/75-21/27 84/75-21/45 84/75-21/63