The Division Symbol in a Simple Fractions: Problem 8

Rule 5:
 The Division Symbol  in a simple fraction tells the reader
that the entire expression above the division symbol is the numerator
and must be treated as if it were one number, and the entire
expression below the division symbol is the denominator and must be
treated as if it were one number.

Problem 8:
 Simplify the fraction .

Answer:
 The numerator can be simplified to  18 and
the denominator can be simplified to  9. The fraction can be written as
which can be written as .
You can either answer the question by stating that the numerator is 
18 and the denominator is  9 or you can state that the numerator is 2
and the denominator is 1 in the final version.
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