Answers

Subtract 45/81 from 7/36

7/36 - 45/81 is -13/36.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 81 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 36 × 9 = 324,
   7/36 = 7 × 9/36 × 9 = 63/324
3. Likewise, for the 2nd fraction, since 81 × 4 = 324,
   45/81 = 45 × 4/81 × 4 = 180/324
4. Subtract the two like fractions:
   63/324 - 180/324 = 63 - 180/324 = -117/324
5. After reducing the fraction, the answer is -13/36

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