Subtract 30/84 from 2/81
2/81 - 30/84 is -377/1134.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 84 is 2268
Next, find the equivalent fraction of both fractional numbers with denominator 2268 - For the 1st fraction, since 81 × 28 = 2268,
2/81 = 2 × 28/81 × 28 = 56/2268 - Likewise, for the 2nd fraction, since 84 × 27 = 2268,
30/84 = 30 × 27/84 × 27 = 810/2268 - Subtract the two like fractions:
56/2268 - 810/2268 = 56 - 810/2268 = -754/2268 - After reducing the fraction, the answer is -377/1134
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