Subtract 42/81 from 28/75
28/75 - 42/81 is -98/675.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 75 and 81 is 2025
Next, find the equivalent fraction of both fractional numbers with denominator 2025 - For the 1st fraction, since 75 × 27 = 2025,
28/75 = 28 × 27/75 × 27 = 756/2025 - Likewise, for the 2nd fraction, since 81 × 25 = 2025,
42/81 = 42 × 25/81 × 25 = 1050/2025 - Subtract the two like fractions:
756/2025 - 1050/2025 = 756 - 1050/2025 = -294/2025 - After reducing the fraction, the answer is -98/675
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