Answers

Subtract 27/7 from 28/9

1^st number: 3 1/9, 2^nd number: 3 6/7

28/9 - 27/7 is -47/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 7 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 9 × 7 = 63,
   28/9 = 28 × 7/9 × 7 = 196/63
3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
   27/7 = 27 × 9/7 × 9 = 243/63
4. Subtract the two like fractions:
   196/63 - 243/63 = 196 - 243/63 = -47/63

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