Subtract 5/81 from 40/15
1st number: 2 10/15, 2nd number: 5/81
40/15 - 5/81 is 211/81.
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,
40/15 = 40 × 27/15 × 27 = 1080/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
5/81 = 5 × 5/81 × 5 = 25/405 - Subtract the two like fractions:
1080/405 - 25/405 = 1080 - 25/405 = 1055/405 - After reducing the fraction, the answer is 211/81
- In mixed form: 249/81
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