Respuesta :

Answer:

-2/5

Step-by-step explanation:

Answer:

x = -2/5 or -0.4

Step-by-step explanation:

The non-permissible replacement of the variable in a certain expression is the value of x that will make the denominator of the expression zero.

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Then,

⇒ 5x + 2 = 0

⇒ 5x = -2

x = -2/5 or -0.4

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