Answers

Subtract 3/90 from 28/27

1^st number: 1 1/27, 2^nd number: 3/90

28/27 - 3/90 is 271/270.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 90 is 270
   
   Next, find the equivalent fraction of both fractional numbers with denominator 270
2. For the 1st fraction, since 27 × 10 = 270,
   28/27 = 28 × 10/27 × 10 = 280/270
3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
   3/90 = 3 × 3/90 × 3 = 9/270
4. Subtract the two like fractions:
   280/270 - 9/270 = 280 - 9/270 = 271/270
5. In mixed form: 11/270

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