Answers

Subtract 21/6 from 2/3

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

2/3 - 21/6 is -17/6.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 3 and 6 is 6
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6
2. For the 1st fraction, since 3 × 2 = 6,
   2/3 = 2 × 2/3 × 2 = 4/6
3. Likewise, for the 2nd fraction, since 6 × 1 = 6,
   21/6 = 21 × 1/6 × 1 = 21/6
4. Subtract the two like fractions:
   4/6 - 21/6 = 4 - 21/6 = -17/6

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