We want to write the equation:

In slope-intercept form.
The slope-intercept form is given by the equation:

Where m is the slope, and b is the slope-intercept with y-axis.
Now, we could start by multiplying the number outside the bracket per all the terms inside of it. This is,

Now, we could solve the equation for y as follows:

And that's the slope-intercept form of the equation.