Answer:
z = 10
Explanation:
Step 1: Make an expression
P = 2l + 2w
Step 2: Distribute
184 = 2(5z + 2) + 2(4z)
184 = (2 * 5z) + (2 * 2) + 8z
184 = 10z + 4 + 8z
184 = 18z + 4
Step 3: Subtract 4 from both sides
184 - 4 = 18z + 4 - 4
180 = 18z
Step 4: Divide both sides by 18
180 / 18 = 18z / 18
10 = z
Answer: z = 10