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we know that, denominator ≠ 0
16y² ≠ 0
y ≠ 0 is excluded value.
Answer:

Step-by-step explanation:
Let the numerator of the fraction=x
Since the denominator of a fraction is two more than the numerator.
Denominator=x+2
The fraction is therefore:

If both numerator and denominator are decreased by six, the fraction becomes:

The simplified result is 
Therefore:

Substituting x=40 into the initial fraction

Therefore, the original fraction is 
Answer:
what functions?
Step-by-step explanation: