Answers

Subtract 4/20 from 75/42

1^st number: 1 33/42, 2^nd number: 4/20

75/42 - 4/20 is 111/70.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 20 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 42 × 10 = 420,
   75/42 = 75 × 10/42 × 10 = 750/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   4/20 = 4 × 21/20 × 21 = 84/420
4. Subtract the two like fractions:
   750/420 - 84/420 = 750 - 84/420 = 666/420
5. After reducing the fraction, the answer is 111/70
6. In mixed form: 141/70

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