Subtract 3/81 from 81/2
1st number: 40 1/2, 2nd number: 3/81
81/2 - 3/81 is 2185/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 2 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 2 × 81 = 162,
81/2 = 81 × 81/2 × 81 = 6561/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
3/81 = 3 × 2/81 × 2 = 6/162 - Subtract the two like fractions:
6561/162 - 6/162 = 6561 - 6/162 = 6555/162 - After reducing the fraction, the answer is 2185/54
- In mixed form: 4025/54
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