Answers

Subtract 56/81 from 1/2

1/2 - 56/81 is -31/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 2 and 81 is 162
   
   Next, find the equivalent fraction of both fractional numbers with denominator 162
2. For the 1st fraction, since 2 × 81 = 162,
   1/2 = 1 × 81/2 × 81 = 81/162
3. Likewise, for the 2nd fraction, since 81 × 2 = 162,
   56/81 = 56 × 2/81 × 2 = 112/162
4. Subtract the two like fractions:
   81/162 - 112/162 = 81 - 112/162 = -31/162

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