Subtract 20/81 from 54/18
1st number: 3 0/18, 2nd number: 20/81
54/18 - 20/81 is 223/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 81 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 18 × 9 = 162,
54/18 = 54 × 9/18 × 9 = 486/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
20/81 = 20 × 2/81 × 2 = 40/162 - Subtract the two like fractions:
486/162 - 40/162 = 486 - 40/162 = 446/162 - After reducing the fraction, the answer is 223/81
- In mixed form: 261/81
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