Subtract 45/15 from 1/81
1st number: 1/81, 2nd number: 3 0/15
1/81 - 45/15 is -242/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 15 is 405
Next, find the equivalent fraction of both fractional numbers with denominator 405 - For the 1st fraction, since 81 × 5 = 405,
1/81 = 1 × 5/81 × 5 = 5/405 - Likewise, for the 2nd fraction, since 15 × 27 = 405,
45/15 = 45 × 27/15 × 27 = 1215/405 - Subtract the two like fractions:
5/405 - 1215/405 = 5 - 1215/405 = -1210/405 - After reducing the fraction, the answer is -242/81
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