Of the following options, what could be a possible first step in solving the equation 3x - 1 = 2x + 4?

The first steps would be something along the lines of ...

Combine like terms

2x and 3x

-1 and 4

Here is how to work the problem,

3x - 1 = 2x + 4

The goal is to get X alone,

So Combine like terms by subtracting 2x from 3x

and Adding 1 to 4

Now you have

x = 5

Move the "x" terms to the same side