Answer:

Explanation:
Pre-Solving
We are given the following equation:
A = 2x + 6xz
Which we want to solve for x.
To do that, we will need to isolate x on one side.
Solving
First, we can factor out x from both terms on the right side.
A = x(2 + 6z)
Now, divide both sides by (2 + 6z).
We get:
