Answer:
z=4
Step-by-step explanation:
You would distribute the negative sign outside of the parentheses and get:
2z-z+1=5z-15
Then combine like terms and get:
z+1=5z-15
Subtract 5z from both sides:
-4z+1=-15
Subtract 1 from both sides:
-4z=-16
Then divide both sides by -4:
z=4
