Answers

Subtract 2/9 from 6/21

6/21 - 2/9 is 4/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 9 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 21 × 3 = 63,
   6/21 = 6 × 3/21 × 3 = 18/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   2/9 = 2 × 7/9 × 7 = 14/63
4. Subtract the two like fractions:
   18/63 - 14/63 = 18 - 14/63 = 4/63

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