Subtract 12/24 from 5/81
5/81 - 12/24 is -71/162.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 24 is 648
Next, find the equivalent fraction of both fractional numbers with denominator 648 - For the 1st fraction, since 81 × 8 = 648,
5/81 = 5 × 8/81 × 8 = 40/648 - Likewise, for the 2nd fraction, since 24 × 27 = 648,
12/24 = 12 × 27/24 × 27 = 324/648 - Subtract the two like fractions:
40/648 - 324/648 = 40 - 324/648 = -284/648 - After reducing the fraction, the answer is -71/162
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