Answer :
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]