Answers

Subtract 15/4 from 9/8

1^st number: 1 1/8, 2^nd number: 3 3/4

9/8 - 15/4 is -21/8.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 4 is 8
   
   Next, find the equivalent fraction of both fractional numbers with denominator 8
2. For the 1st fraction, since 8 × 1 = 8,
   9/8 = 9 × 1/8 × 1 = 9/8
3. Likewise, for the 2nd fraction, since 4 × 2 = 8,
   15/4 = 15 × 2/4 × 2 = 30/8
4. Subtract the two like fractions:
   9/8 - 30/8 = 9 - 30/8 = -21/8

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