Answers

Subtract 63/20 from 42/28

1^st number: 1 14/28, 2^nd number: 3 3/20

42/28 - 63/20 is -33/20.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 20 is 140
   
   Next, find the equivalent fraction of both fractional numbers with denominator 140
2. For the 1st fraction, since 28 × 5 = 140,
   42/28 = 42 × 5/28 × 5 = 210/140
3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
   63/20 = 63 × 7/20 × 7 = 441/140
4. Subtract the two like fractions:
   210/140 - 441/140 = 210 - 441/140 = -231/140
5. After reducing the fraction, the answer is -33/20

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