Answers

Subtract 15/8 from 54/63

1^st number: 54/63, 2^nd number: 1 7/8

54/63 - 15/8 is -57/56.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 8 is 504
   
   Next, find the equivalent fraction of both fractional numbers with denominator 504
2. For the 1st fraction, since 63 × 8 = 504,
   54/63 = 54 × 8/63 × 8 = 432/504
3. Likewise, for the 2nd fraction, since 8 × 63 = 504,
   15/8 = 15 × 63/8 × 63 = 945/504
4. Subtract the two like fractions:
   432/504 - 945/504 = 432 - 945/504 = -513/504
5. After reducing the fraction, the answer is -57/56

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