Respuesta :

Answer:

21

Step-by-step explanation:

From the given statements, we know that [tex]z=6.[/tex]

Therefore, substituting this in, we have

[tex]z+15=6+15=\boxed{21}.[/tex]

The answer is  21

Substitute the value of [tex]z[/tex] into the expression:

[tex]z+15=?[/tex]

[tex](6)+15=21[/tex]

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