Respuesta :

Willchemistry
Hey there!

3z - 4 ≤ 17

add 4 to both sides:

3z-4 + 4 ≤ 17 + 4

simplify:

3z ≤ 21

divide both sides by 3 :

3z / 3 ≤ 21 / 3

z  ≤  21 / 3

z ≤ 7


hope this helps!