Letter C)63=9x7, multiplication
Answer:

Step-by-step explanation:
5z-6-34=z-6
combine like terms (-6-34)
5z-40=z-6
subtract z on both sides
5z-z-40=-6
4z-40=-6
add -40 on both sides
4z=34
divide both sides by 4

z=
hope this helps
Answer:
A?
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
We simply start by opening up the bracket
we have this as:
x^2(x-3x) = x^3 - 3x^2
The degree is simply the highest power of x
This is 3