Answers

Subtract 81/18 from 16/8

1^st number: 2 0/8, 2^nd number: 4 9/18

16/8 - 81/18 is -5/2.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 8 and 18 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 8 × 9 = 72,
   16/8 = 16 × 9/8 × 9 = 144/72
3. Likewise, for the 2nd fraction, since 18 × 4 = 72,
   81/18 = 81 × 4/18 × 4 = 324/72
4. Subtract the two like fractions:
   144/72 - 324/72 = 144 - 324/72 = -180/72
5. After reducing the fraction, the answer is -5/2

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