Subtract 16/81 from 84/4
1st number: 21 0/4, 2nd number: 16/81
84/4 - 16/81 is 1685/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 4 and 81 is 324
Next, find the equivalent fraction of both fractional numbers with denominator 324 - For the 1st fraction, since 4 × 81 = 324,
84/4 = 84 × 81/4 × 81 = 6804/324 - Likewise, for the 2nd fraction, since 81 × 4 = 324,
16/81 = 16 × 4/81 × 4 = 64/324 - Subtract the two like fractions:
6804/324 - 64/324 = 6804 - 64/324 = 6740/324 - After reducing the fraction, the answer is 1685/81
- In mixed form: 2065/81
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