Subtract 9/25 from 3/81
3/81 - 9/25 is -218/675.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 25 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 81 × 25 = 2025,
3/81 = 3 × 25/81 × 25 = 75/2025 - Likewise, for the 2nd fraction, since 25 × 81 = 2025,
9/25 = 9 × 81/25 × 81 = 729/2025 - Subtract the two like fractions:
75/2025 - 729/2025 = 75 - 729/2025 = -654/2025 - After reducing the fraction, the answer is -218/675
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