Subtract 40/81 from 9/84
9/84 - 40/81 is -877/2268.
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,
9/84 = 9 × 27/84 × 27 = 243/2268 - Likewise, for the 2nd fraction, since 81 × 28 = 2268,
40/81 = 40 × 28/81 × 28 = 1120/2268 - Subtract the two like fractions:
243/2268 - 1120/2268 = 243 - 1120/2268 = -877/2268
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