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Find All Values of the Variable for Which the Rational $\frac { x - 9 } { 7 - x }$

Question 105

Multiple Choice

Find all values of the variable for which the rational expression is undefined.
- $\frac { x - 9 } { 7 - x }$

A) 7
B) None
C) 7,9
D) $- 7$

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