Answers

Subtract 42/4 from 15/84

1^st number: 15/84, 2^nd number: 10 2/4

15/84 - 42/4 is -289/28.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 4 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 84 × 1 = 84,
   15/84 = 15 × 1/84 × 1 = 15/84
3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
   42/4 = 42 × 21/4 × 21 = 882/84
4. Subtract the two like fractions:
   15/84 - 882/84 = 15 - 882/84 = -867/84
5. After reducing the fraction, the answer is -289/28

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