Subtract 18/50 from 7/81
7/81 - 18/50 is -554/2025.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 50 is 4050
Next, find the equivalent fraction of both fractional numbers with denominator 4050 - For the 1st fraction, since 81 × 50 = 4050,
7/81 = 7 × 50/81 × 50 = 350/4050 - Likewise, for the 2nd fraction, since 50 × 81 = 4050,
18/50 = 18 × 81/50 × 81 = 1458/4050 - Subtract the two like fractions:
350/4050 - 1458/4050 = 350 - 1458/4050 = -1108/4050 - After reducing the fraction, the answer is -554/2025
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