I would first simplify the left side by combining like terms.
Since 5x and 3x are like terms, we can combine them to get 8x.
So we have 8x - 7 = 25.
Solving from here, we would add 7 to both sides to get 8x = 32.
Finally, dividing both sides of the equation by 8, we have x = 4.
So the solution to this equation is x = 4.