Subtract 10/18 from 35/81
35/81 - 10/18 is -10/81.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 18 is 162
Next, find the equivalent fraction of both fractional numbers with denominator 162 - For the 1st fraction, since 81 × 2 = 162,
35/81 = 35 × 2/81 × 2 = 70/162 - Likewise, for the 2nd fraction, since 18 × 9 = 162,
10/18 = 10 × 9/18 × 9 = 90/162 - Subtract the two like fractions:
70/162 - 90/162 = 70 - 90/162 = -20/162 - After reducing the fraction, the answer is -10/81
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