Respuesta :

Answer:

-10

Step-by-step explanation:

f(x)=-x-4

f(x)=6

-------------

-x-4=6

-x=6+4

-x=10

x=-10

Answer:

[tex]\displaystyle -10 = x[/tex]

Step-by-step explanation:

6 = −x - 4

+ 4 + 4

_________

[tex]\displaystyle 10 = -x \\ \\ -10 = x[/tex]

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