Answers

Subtract 45/14 from 63/20

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

63/20 - 45/14 is -9/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 14 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 20 × 7 = 140,
   63/20 = 63 × 7/20 × 7 = 441/140
3. Likewise, for the 2nd fraction, since 14 × 10 = 140,
   45/14 = 45 × 10/14 × 10 = 450/140
4. Subtract the two like fractions:
   441/140 - 450/140 = 441 - 450/140 = -9/140

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