Subtract 9/81 from 6/84
6/84 - 9/81 is -5/126.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 81 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 84 × 27 = 2268,
6/84 = 6 × 27/84 × 27 = 162/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
9/81 = 9 × 28/81 × 28 = 252/2268 - Subtract the two like fractions:
162/2268 - 252/2268 = 162 - 252/2268 = -90/2268 - After reducing the fraction, the answer is -5/126
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