Answers

Subtract 12/81 from 80/30

1^st number: 2 20/30, 2^nd number: 12/81

80/30 - 12/81 is 68/27.

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,
   80/30 = 80 × 27/30 × 27 = 2160/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   12/81 = 12 × 10/81 × 10 = 120/810
4. Subtract the two like fractions:
   2160/810 - 120/810 = 2160 - 120/810 = 2040/810
5. After reducing the fraction, the answer is 68/27
6. In mixed form: 214/27

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