Answer:
z=28
Step-by-step explanation:
first, add one to each side to eliminate the negative one. you'll get:
7= [tex]\frac{1}{4}[/tex]z
now, to get rid of the 1/4, multiply both sides by 4.
(7x4)=(1/4z)4
simplify to get 28=z.
hope this helps!
the correct answer is z=28
