Subtract 21/9 from 6/81
1st number: 6/81, 2nd number: 2 3/9
6/81 - 21/9 is -61/27.
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,
6/81 = 6 × 1/81 × 1 = 6/81 - Likewise, for the 2nd fraction, since 9 × 9 = 81,
21/9 = 21 × 9/9 × 9 = 189/81 - Subtract the two like fractions:
6/81 - 189/81 = 6 - 189/81 = -183/81 - After reducing the fraction, the answer is -61/27
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