Subtract 1/12 from 4/81
4/81 - 1/12 is -11/324.
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,
4/81 = 4 × 4/81 × 4 = 16/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
1/12 = 1 × 27/12 × 27 = 27/324 - Subtract the two like fractions:
16/324 - 27/324 = 16 - 27/324 = -11/324
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