Subtract 27/81 from 7/25
7/25 - 27/81 is -4/75.
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,
7/25 = 7 × 81/25 × 81 = 567/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
27/81 = 27 × 25/81 × 25 = 675/2025 - Subtract the two like fractions:
567/2025 - 675/2025 = 567 - 675/2025 = -108/2025 - After reducing the fraction, the answer is -4/75
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