Answers

Subtract 48/81 from 81/30

1^st number: 2 21/30, 2^nd number: 48/81

81/30 - 48/81 is 569/270.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   81/30 = 81 × 27/30 × 27 = 2187/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   48/81 = 48 × 10/81 × 10 = 480/810
4. Subtract the two like fractions:
   2187/810 - 480/810 = 2187 - 480/810 = 1707/810
5. After reducing the fraction, the answer is 569/270
6. In mixed form: 229/270

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