Answers

Subtract 49/63 from 45/21

1^st number: 2 3/21, 2^nd number: 49/63

45/21 - 49/63 is 86/63.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 63 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 63 × 1 = 63,
   49/63 = 49 × 1/63 × 1 = 49/63
4. Subtract the two like fractions:
   135/63 - 49/63 = 135 - 49/63 = 86/63
5. In mixed form: 123/63

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