Answers

Subtract 40/6 from 45/81

1^st number: 45/81, 2^nd number: 6 4/6

45/81 - 40/6 is -55/9.

Steps for subtracting fractions

1. 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
2. For the 1st fraction, since 81 × 2 = 162,
   45/81 = 45 × 2/81 × 2 = 90/162
3. Likewise, for the 2nd fraction, since 6 × 27 = 162,
   40/6 = 40 × 27/6 × 27 = 1080/162
4. Subtract the two like fractions:
   90/162 - 1080/162 = 90 - 1080/162 = -990/162
5. After reducing the fraction, the answer is -55/9

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