Answers

Subtract 20/3 from 15/28

1^st number: 15/28, 2^nd number: 6 2/3

15/28 - 20/3 is -515/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 3 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   15/28 = 15 × 3/28 × 3 = 45/84
3. Likewise, for the 2nd fraction, since 3 × 28 = 84,
   20/3 = 20 × 28/3 × 28 = 560/84
4. Subtract the two like fractions:
   45/84 - 560/84 = 45 - 560/84 = -515/84

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