Answers

Subtract 63/20 from 42/14

1^st number: 3 0/14, 2^nd number: 3 3/20

42/14 - 63/20 is -3/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 14 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 14 × 10 = 140,
   42/14 = 42 × 10/14 × 10 = 420/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   63/20 = 63 × 7/20 × 7 = 441/140
4. Subtract the two like fractions:
   420/140 - 441/140 = 420 - 441/140 = -21/140
5. After reducing the fraction, the answer is -3/20

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