Subtract 1/12 from 18/81
18/81 - 1/12 is 5/36.
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,
18/81 = 18 × 4/81 × 4 = 72/324 - Likewise, for the 2nd fraction, since 12 × 27 = 324,
1/12 = 1 × 27/12 × 27 = 27/324 - Subtract the two like fractions:
72/324 - 27/324 = 72 - 27/324 = 45/324 - After reducing the fraction, the answer is 5/36
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