Respuesta :

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Answer:

x ∈ R (all reals)

Step-by-step explanation:

14 - (2x + 5) = -2x + 9

Take out parentheses

14 - 2x - 5 = -2x + 9

Simplify

9 = 9

Since 9 does equal 9, it means that this equation can be true for all real values of x.