Subtract 84/81 from 1/84
1st number: 1/84, 2nd number: 1 3/81
1/84 - 84/81 is -775/756.
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,
1/84 = 1 × 27/84 × 27 = 27/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
84/81 = 84 × 28/81 × 28 = 2352/2268 - Subtract the two like fractions:
27/2268 - 2352/2268 = 27 - 2352/2268 = -2325/2268 - After reducing the fraction, the answer is -775/756
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