Answers

Subtract 20/42 from 84/20

1^st number: 4 4/20, 2^nd number: 20/42

84/20 - 20/42 is 391/105.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 42 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 20 × 21 = 420,
   84/20 = 84 × 21/20 × 21 = 1764/420
3. Likewise, for the 2nd fraction, since 42 × 10 = 420,
   20/42 = 20 × 10/42 × 10 = 200/420
4. Subtract the two like fractions:
   1764/420 - 200/420 = 1764 - 200/420 = 1564/420
5. After reducing the fraction, the answer is 391/105
6. In mixed form: 376/105

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