Answers

Subtract 54/81 from 18/8

1^st number: 2 2/8, 2^nd number: 54/81

18/8 - 54/81 is 19/12.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 81 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 8 × 81 = 648,
   18/8 = 18 × 81/8 × 81 = 1458/648
3. Likewise, for the 2nd fraction, since 81 × 8 = 648,
   54/81 = 54 × 8/81 × 8 = 432/648
4. Subtract the two like fractions:
   1458/648 - 432/648 = 1458 - 432/648 = 1026/648
5. After reducing the fraction, the answer is 19/12
6. In mixed form: 17/12

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