Respuesta :

ncartier03
The answer is C because you; need to add instead of subtracting to get a positive number.
Willchemistry
2 - z / 3 = 12

Multiply both sides by 3 :

3 * 2 - 3 * ( z / 3 )  = 3 * 12

Refine :

6 - z =  36

Subtract 6 from both sides:

6 - z  - 6 = 36 - 6

- z =  30

Divide both sides by - 1

- z / - 1 =   30 / - 1

z =  - 30

answer C

hope this helps!