Answers

Subtract 30/9 from 81/30

1^st number: 2 21/30, 2^nd number: 3 3/9

81/30 - 30/9 is -19/30.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 9 is 90
   
   Next, find the equivalent fraction of both fractional numbers with denominator 90
2. For the 1st fraction, since 30 × 3 = 90,
   81/30 = 81 × 3/30 × 3 = 243/90
3. Likewise, for the 2nd fraction, since 9 × 10 = 90,
   30/9 = 30 × 10/9 × 10 = 300/90
4. Subtract the two like fractions:
   243/90 - 300/90 = 243 - 300/90 = -57/90
5. After reducing the fraction, the answer is -19/30

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