Subtract 9/81 from 1/5
1/5 - 9/81 is 4/45.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 5 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 5 × 81 = 405,
1/5 = 1 × 81/5 × 81 = 81/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
9/81 = 9 × 5/81 × 5 = 45/405 - Subtract the two like fractions:
81/405 - 45/405 = 81 - 45/405 = 36/405 - After reducing the fraction, the answer is 4/45
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