Answers

Subtract 90/28 from 5/42

1^st number: 5/42, 2^nd number: 3 6/28

5/42 - 90/28 is -65/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 28 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 42 × 2 = 84,
   5/42 = 5 × 2/42 × 2 = 10/84
3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
   90/28 = 90 × 3/28 × 3 = 270/84
4. Subtract the two like fractions:
   10/84 - 270/84 = 10 - 270/84 = -260/84
5. After reducing the fraction, the answer is -65/21

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