Answer:
8
Step-by-step explanation:
Like term is having the same variables and powers
each bolded below has the variable z other than 8 (second one)
8z, 8, 4z, -8z
14x
Step 1: Collect like terms by adding their coefficients
(11+3)x
Step 2: Add the numbers
sin(π/6) is independent of x, so