Answers

Subtract 63/49 from 81/20

1^st number: 4 1/20, 2^nd number: 1 14/49

81/20 - 63/49 is 387/140.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 49 is 980
   
   Next, find the equivalent fraction of both fractional numbers with denominator 980
2. For the 1st fraction, since 20 × 49 = 980,
   81/20 = 81 × 49/20 × 49 = 3969/980
3. Likewise, for the 2nd fraction, since 49 × 20 = 980,
   63/49 = 63 × 20/49 × 20 = 1260/980
4. Subtract the two like fractions:
   3969/980 - 1260/980 = 3969 - 1260/980 = 2709/980
5. After reducing the fraction, the answer is 387/140
6. In mixed form: 2107/140

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