Answers

Subtract 25/8 from 21/36

1^st number: 21/36, 2^nd number: 3 1/8

21/36 - 25/8 is -61/24.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 36 and 8 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 36 × 2 = 72,
   21/36 = 21 × 2/36 × 2 = 42/72
3. Likewise, for the 2nd fraction, since 8 × 9 = 72,
   25/8 = 25 × 9/8 × 9 = 225/72
4. Subtract the two like fractions:
   42/72 - 225/72 = 42 - 225/72 = -183/72
5. After reducing the fraction, the answer is -61/24

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