Answers

Subtract 20/84 from 5/4

1^st number: 1 1/4, 2^nd number: 20/84

5/4 - 20/84 is 85/84.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 84 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 4 × 21 = 84,
   5/4 = 5 × 21/4 × 21 = 105/84
3. Likewise, for the 2nd fraction, since 84 × 1 = 84,
   20/84 = 20 × 1/84 × 1 = 20/84
4. Subtract the two like fractions:
   105/84 - 20/84 = 105 - 20/84 = 85/84
5. In mixed form: 11/84

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