Subtract 27/4 from 1/81
1st number: 1/81, 2nd number: 6 3/4
1/81 - 27/4 is -2183/324.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 4 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 4 × 81 = 324,
27/4 = 27 × 81/4 × 81 = 2187/324 - Subtract the two like fractions:
4/324 - 2187/324 = 4 - 2187/324 = -2183/324
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