Subtract 1/81 from 84/4
1st number: 21 0/4, 2nd number: 1/81
84/4 - 1/81 is 1700/81.
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,
1/81 = 1 × 4/81 × 4 = 4/324 - Subtract the two like fractions:
6804/324 - 4/324 = 6804 - 4/324 = 6800/324 - After reducing the fraction, the answer is 1700/81
- In mixed form: 2080/81
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