Answers

Subtract 63/9 from 9/21

1^st number: 9/21, 2^nd number: 7 0/9

9/21 - 63/9 is -46/7.

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,
   9/21 = 9 × 3/21 × 3 = 27/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   63/9 = 63 × 7/9 × 7 = 441/63
4. Subtract the two like fractions:
   27/63 - 441/63 = 27 - 441/63 = -414/63
5. After reducing the fraction, the answer is -46/7

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