Subtract 45/81 from 5/18
5/18 - 45/81 is -5/18.
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,
5/18 = 5 × 9/18 × 9 = 45/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
45/81 = 45 × 2/81 × 2 = 90/162 - Subtract the two like fractions:
45/162 - 90/162 = 45 - 90/162 = -45/162 - After reducing the fraction, the answer is -5/18
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