Subtract 84/81 from 12/15
1st number: 12/15, 2nd number: 1 3/81
12/15 - 84/81 is -32/135.
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,
12/15 = 12 × 27/15 × 27 = 324/405 - Likewise, for the 2nd fraction, since 81 × 5 = 405,
84/81 = 84 × 5/81 × 5 = 420/405 - Subtract the two like fractions:
324/405 - 420/405 = 324 - 420/405 = -96/405 - After reducing the fraction, the answer is -32/135
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