Subtract 56/54 from 18/81
1st number: 18/81, 2nd number: 1 2/54
18/81 - 56/54 is -22/27.
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,
18/81 = 18 × 2/81 × 2 = 36/162 - Likewise, for the 2nd fraction, since 54 × 3 = 162,
56/54 = 56 × 3/54 × 3 = 168/162 - Subtract the two like fractions:
36/162 - 168/162 = 36 - 168/162 = -132/162 - After reducing the fraction, the answer is -22/27
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