Answers

Subtract 60/20 from 15/42

1^st number: 15/42, 2^nd number: 3 0/20

15/42 - 60/20 is -37/14.

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,
   15/42 = 15 × 10/42 × 10 = 150/420
3. Likewise, for the 2nd fraction, since 20 × 21 = 420,
   60/20 = 60 × 21/20 × 21 = 1260/420
4. Subtract the two like fractions:
   150/420 - 1260/420 = 150 - 1260/420 = -1110/420
5. After reducing the fraction, the answer is -37/14

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