Subtract 1/81 from 3/15
3/15 - 1/81 is 76/405.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 15 and 81 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 15 × 27 = 405,
3/15 = 3 × 27/15 × 27 = 81/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
1/81 = 1 × 5/81 × 5 = 5/405 - Subtract the two like fractions:
81/405 - 5/405 = 81 - 5/405 = 76/405
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