Step-by-step explanation:
6)

7)

8)


9)

Answer:
x= -6
Step-by-step explanation:
5x-8x=14+4
-3=18
x= -6
Answer: the question can only be simplified to -8z-12 because there is no equal sign.
Step-by-step explanation:
(4z - 12) - 12z
-8z-12
Its 4 plus i square root of eleven