Subtract 56/54 from 21/75
1st number: 21/75, 2nd number: 1 2/54
21/75 - 56/54 is -511/675.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 54 is 1350
Next, find the equivalent fraction of both fractional numbers with denominator 1350 - For the 1st fraction, since 75 × 18 = 1350,
21/75 = 21 × 18/75 × 18 = 378/1350 - Likewise, for the 2nd fraction, since 54 × 25 = 1350,
56/54 = 56 × 25/54 × 25 = 1400/1350 - Subtract the two like fractions:
378/1350 - 1400/1350 = 378 - 1400/1350 = -1022/1350 - After reducing the fraction, the answer is -511/675
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/75-56/54 63/75-56/54