Answers

Subtract 5/21 from 6/28

6/28 - 5/21 is -1/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 21 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   6/28 = 6 × 3/28 × 3 = 18/84
3. Likewise, for the 2nd fraction, since 21 × 4 = 84,
   5/21 = 5 × 4/21 × 4 = 20/84
4. Subtract the two like fractions:
   18/84 - 20/84 = 18 - 20/84 = -2/84
5. After reducing the fraction, the answer is -1/42

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