Subtract 21/81 from 49/25
1st number: 1 24/25, 2nd number: 21/81
49/25 - 21/81 is 1148/675.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 25 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 25 × 81 = 2025,
49/25 = 49 × 81/25 × 81 = 3969/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
21/81 = 21 × 25/81 × 25 = 525/2025 - Subtract the two like fractions:
3969/2025 - 525/2025 = 3969 - 525/2025 = 3444/2025 - After reducing the fraction, the answer is 1148/675
- In mixed form: 1473/675
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 98/25-21/81 49/25-42/81 49/50-21/81 49/25-63/81 49/75-21/81