Answers

Subtract 18/9 from 18/72

1^st number: 18/72, 2^nd number: 2 0/9

18/72 - 18/9 is -7/4.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 72 and 9 is 72
   
   Next, find the equivalent fraction of both fractional numbers with denominator 72
2. For the 1st fraction, since 72 × 1 = 72,
   18/72 = 18 × 1/72 × 1 = 18/72
3. Likewise, for the 2nd fraction, since 9 × 8 = 72,
   18/9 = 18 × 8/9 × 8 = 144/72
4. Subtract the two like fractions:
   18/72 - 144/72 = 18 - 144/72 = -126/72
5. After reducing the fraction, the answer is -7/4

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