Answers

Subtract 15/7 from 12/63

1^st number: 12/63, 2^nd number: 2 1/7

12/63 - 15/7 is -41/21.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 7 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 63 × 1 = 63,
   12/63 = 12 × 1/63 × 1 = 12/63
3. Likewise, for the 2nd fraction, since 7 × 9 = 63,
   15/7 = 15 × 9/7 × 9 = 135/63
4. Subtract the two like fractions:
   12/63 - 135/63 = 12 - 135/63 = -123/63
5. After reducing the fraction, the answer is -41/21

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