Answers

Subtract 20/3 from 40/42

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

40/42 - 20/3 is -40/7.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 3 is 42
   
   Next, find the equivalent fraction of both fractional numbers with denominator 42
2. For the 1st fraction, since 42 × 1 = 42,
   40/42 = 40 × 1/42 × 1 = 40/42
3. Likewise, for the 2nd fraction, since 3 × 14 = 42,
   20/3 = 20 × 14/3 × 14 = 280/42
4. Subtract the two like fractions:
   40/42 - 280/42 = 40 - 280/42 = -240/42
5. After reducing the fraction, the answer is -40/7

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