Subtract 8/9 from 12/81
12/81 - 8/9 is -20/27.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 9 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 81 × 1 = 81,
12/81 = 12 × 1/81 × 1 = 12/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
8/9 = 8 × 9/9 × 9 = 72/81 - Subtract the two like fractions:
12/81 - 72/81 = 12 - 72/81 = -60/81 - After reducing the fraction, the answer is -20/27
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