Subtract 9/12 from 1/81
1/81 - 9/12 is -239/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 12 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 81 × 4 = 324,
1/81 = 1 × 4/81 × 4 = 4/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
9/12 = 9 × 27/12 × 27 = 243/324 - Subtract the two like fractions:
4/324 - 243/324 = 4 - 243/324 = -239/324
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