Answers

Subtract 20/63 from 81/6

1^st number: 13 3/6, 2^nd number: 20/63

81/6 - 20/63 is 1661/126.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 6 and 63 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 6 × 21 = 126,
   81/6 = 81 × 21/6 × 21 = 1701/126
3. Likewise, for the 2nd fraction, since 63 × 2 = 126,
   20/63 = 20 × 2/63 × 2 = 40/126
4. Subtract the two like fractions:
   1701/126 - 40/126 = 1701 - 40/126 = 1661/126
5. In mixed form: 1323/126

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