Subtract 18/81 from 3/25
3/25 - 18/81 is -23/225.
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,
3/25 = 3 × 81/25 × 81 = 243/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
18/81 = 18 × 25/81 × 25 = 450/2025 - Subtract the two like fractions:
243/2025 - 450/2025 = 243 - 450/2025 = -207/2025 - After reducing the fraction, the answer is -23/225
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