Subtract 5/81 from 21/3
1st number: 7 0/3, 2nd number: 5/81
21/3 - 5/81 is 562/81.
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,
5/81 = 5 × 1/81 × 1 = 5/81 - Subtract the two like fractions:
567/81 - 5/81 = 567 - 5/81 = 562/81 - In mixed form: 676/81
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