Subtract 7/81 from 1/27
1/27 - 7/81 is -4/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 27 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 27 × 3 = 81,
1/27 = 1 × 3/27 × 3 = 3/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
7/81 = 7 × 1/81 × 1 = 7/81 - Subtract the two like fractions:
3/81 - 7/81 = 3 - 7/81 = -4/81
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