Answers

Subtract 81/3 from 28/30

1^st number: 28/30, 2^nd number: 27 0/3

28/30 - 81/3 is -391/15.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 3 is 30
   
   Next, find the equivalent fraction of both fractional numbers with denominator 30
2. For the 1st fraction, since 30 × 1 = 30,
   28/30 = 28 × 1/30 × 1 = 28/30
3. Likewise, for the 2nd fraction, since 3 × 10 = 30,
   81/3 = 81 × 10/3 × 10 = 810/30
4. Subtract the two like fractions:
   28/30 - 810/30 = 28 - 810/30 = -782/30
5. After reducing the fraction, the answer is -391/15

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