Answers

Subtract 21/6 from 7/28

1^st number: 7/28, 2^nd number: 3 3/6

7/28 - 21/6 is -13/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 6 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   7/28 = 7 × 3/28 × 3 = 21/84
3. Likewise, for the 2nd fraction, since 6 × 14 = 84,
   21/6 = 21 × 14/6 × 14 = 294/84
4. Subtract the two like fractions:
   21/84 - 294/84 = 21 - 294/84 = -273/84
5. After reducing the fraction, the answer is -13/4

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