Question

How do you solve?

2z - 2z(1 + 3) = 48

Answer 1

First, we want to distribute the 2z to what's in the parentheses:

`2z-(2z+6z)=48`

Then we need to distribute the negative sign outside of the parentheses in order to make it easier to solve and combine like terms:

`2z-2z-6z=48`

Now we combine like terms. The '2z' and '-2z' cancel each other out, so:

`-6z=48`

Then we solve for z by dividing by -6 on both sides:

`z=-8`

So now we know that z = -8.