Answers

Subtract 42/15 from 5/84

1^st number: 5/84, 2^nd number: 2 12/15

5/84 - 42/15 is -1151/420.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 15 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 84 × 5 = 420,
   5/84 = 5 × 5/84 × 5 = 25/420
3. Likewise, for the 2nd fraction, since 15 × 28 = 420,
   42/15 = 42 × 28/15 × 28 = 1176/420
4. Subtract the two like fractions:
   25/420 - 1176/420 = 25 - 1176/420 = -1151/420

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