Subtract 1/54 from 30/81
30/81 - 1/54 is 19/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 54 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
30/81 = 30 × 2/81 × 2 = 60/162 - Likewise, for the 2nd fraction, since 54 × 3 = 162,
1/54 = 1 × 3/54 × 3 = 3/162 - Subtract the two like fractions:
60/162 - 3/162 = 60 - 3/162 = 57/162 - After reducing the fraction, the answer is 19/54
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