Answers

Subtract 10/36 from 42/81

42/81 - 10/36 is 13/54.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 36 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   42/81 = 42 × 4/81 × 4 = 168/324
3. Likewise, for the 2nd fraction, since 36 × 9 = 324,
   10/36 = 10 × 9/36 × 9 = 90/324
4. Subtract the two like fractions:
   168/324 - 90/324 = 168 - 90/324 = 78/324
5. After reducing the fraction, the answer is 13/54

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