Subtract 8/81 from 21/3
1st number: 7 0/3, 2nd number: 8/81
21/3 - 8/81 is 559/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 3 and 81 is 81
Next, find the equivalent fraction of both fractional numbers with denominator 81 - For the 1st fraction, since 3 × 27 = 81,
21/3 = 21 × 27/3 × 27 = 567/81 - Likewise, for the 2nd fraction, since 81 × 1 = 81,
8/81 = 8 × 1/81 × 1 = 8/81 - Subtract the two like fractions:
567/81 - 8/81 = 567 - 8/81 = 559/81 - In mixed form: 673/81
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