Answer:
[tex]z = 3[/tex]
Step-by-step explanation:
1) Divide both sides by 2.
[tex]2z - 4 = \frac{4}{2} [/tex]
2) Simplify 4/2 to 2.
[tex]2z - 4 = 2[/tex]
3) Add 4 to both sides.
[tex]2z = 2 + 4[/tex]
4) Simplify 2 + 4 to 6.
[tex]2z = 6[/tex]
5) Divide both sides by 2.
[tex]z = \frac{6}{2} [/tex]
6) Simplify 6/2 to 3.
[tex]z = 3[/tex]
therefor, the answer is z = 3.
