Answers

Subtract 30/4 from 56/81

1^st number: 56/81, 2^nd number: 7 2/4

56/81 - 30/4 is -1103/162.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 4 is 324
   
   Next, find the equivalent fraction of both fractional numbers with denominator 324
2. For the 1st fraction, since 81 × 4 = 324,
   56/81 = 56 × 4/81 × 4 = 224/324
3. Likewise, for the 2nd fraction, since 4 × 81 = 324,
   30/4 = 30 × 81/4 × 81 = 2430/324
4. Subtract the two like fractions:
   224/324 - 2430/324 = 224 - 2430/324 = -2206/324
5. After reducing the fraction, the answer is -1103/162

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