Answers

Subtract 98/9 from 45/21

1^st number: 2 3/21, 2^nd number: 10 8/9

45/21 - 98/9 is -551/63.

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,
   45/21 = 45 × 3/21 × 3 = 135/63
3. Likewise, for the 2nd fraction, since 9 × 7 = 63,
   98/9 = 98 × 7/9 × 7 = 686/63
4. Subtract the two like fractions:
   135/63 - 686/63 = 135 - 686/63 = -551/63

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