What is the value of the rational expression below when x is equal to 4? x-4/x-6

Actually there are two answers: - 3 and 0, depending on how the expression is written.

Step-by-step explanation:

If the rational expression is x - 4/x - 6, we have:

x - 4/x - 6

= 4 - 4/4 - 6

= 4 - 1 - 6 = 4 - 7 = - 3

If the rational expression is (x - 4) / (x - 6), we have:

(x - 4) / (x - 6)

= (4 - 4) / (4 - 6)

= 0/-2 = 0

Answer: - 3

Step-by-step explanation: using the mathematical process

4 - (4/4) - 6=

4-1-6 = - 3