Subtract 15/81 from 8/9
8/9 - 15/81 is 19/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 9 × 9 = 81,
8/9 = 8 × 9/9 × 9 = 72/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
15/81 = 15 × 1/81 × 1 = 15/81 - Subtract the two like fractions:
72/81 - 15/81 = 72 - 15/81 = 57/81 - After reducing the fraction, the answer is 19/27
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