Answers

Subtract 40/42 from 81/6

1^st number: 13 3/6, 2^nd number: 40/42

81/6 - 40/42 is 527/42.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 6 and 42 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 6 × 7 = 42,
   81/6 = 81 × 7/6 × 7 = 567/42
3. Likewise, for the 2nd fraction, since 42 × 1 = 42,
   40/42 = 40 × 1/42 × 1 = 40/42
4. Subtract the two like fractions:
   567/42 - 40/42 = 567 - 40/42 = 527/42
5. In mixed form: 1223/42

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