Answers

Subtract 70/81 from 10/18

10/18 - 70/81 is -25/81.

Steps for subtracting fractions

1. 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
2. For the 1st fraction, since 18 × 9 = 162,
   10/18 = 10 × 9/18 × 9 = 90/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   70/81 = 70 × 2/81 × 2 = 140/162
4. Subtract the two like fractions:
   90/162 - 140/162 = 90 - 140/162 = -50/162
5. After reducing the fraction, the answer is -25/81

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