Subtract 3/6 from 15/81
15/81 - 3/6 is -17/54.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 6 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
15/81 = 15 × 2/81 × 2 = 30/162 - Likewise, for the 2nd fraction, since 6 × 27 = 162,
3/6 = 3 × 27/6 × 27 = 81/162 - Subtract the two like fractions:
30/162 - 81/162 = 30 - 81/162 = -51/162 - After reducing the fraction, the answer is -17/54
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