Subtract 84/81 from 12/18
1st number: 12/18, 2nd number: 1 3/81
12/18 - 84/81 is -10/27.
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,
12/18 = 12 × 9/18 × 9 = 108/162 - Likewise, for the 2nd fraction, since 81 × 2 = 162,
84/81 = 84 × 2/81 × 2 = 168/162 - Subtract the two like fractions:
108/162 - 168/162 = 108 - 168/162 = -60/162 - After reducing the fraction, the answer is -10/27
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