Answer:
[tex]z = 42[/tex]
Step-by-step explanation:
If we want to solve this algebraic equation, we need to isolate z on one side.
[tex]z - 12 = 30[/tex]
Add 12 to both sides:
[tex]z - 12+12 = 30+12\\\\z = 42[/tex]
To check our work, let's substitute 42 in as [tex]z[/tex].
[tex]42 - 12 = 30[/tex]
42 minus 12 is indeed 30.
Hope this helped!
