Question

What is the excluded value of the rational expression: x-4/6 divided by x+1/7?

A. -1
B. 4
C. -7
D. None of the above

Answer 1

For this case we have the following expression:
((x-4) / (6)) / ((x + 1) / (7))
Rewriting we have:
7 (x-4) / 6 (x + 1)
We observe that the expression is not defined for the values where the denominator is equal to zero.
We have then:
x + 1 = 0
x = -1
Answer:
The excluded value of the rational expression is:
A. -1