Subtract 21/81 from 42/25
1st number: 1 17/25, 2nd number: 21/81
42/25 - 21/81 is 959/675.
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,
42/25 = 42 × 81/25 × 81 = 3402/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
21/81 = 21 × 25/81 × 25 = 525/2025 - Subtract the two like fractions:
3402/2025 - 525/2025 = 3402 - 525/2025 = 2877/2025 - After reducing the fraction, the answer is 959/675
- In mixed form: 1284/675
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