<span>(-3 + 3i) + (-6 + 6i) =
= -3 + 3i + (-6) + 6i
= 3i + 6i + (-3) + (-6)
= 9i + (-9)
= 9i - 9
</span>
Answer:

Step-by-step explanation:

Answer:
x=7
Step-by-step explanation:

now let’s put together the like terms


now we divide
By 
the result is

Answer:
Step-by-step explanation: