To solve for x, we need to isolate the variable on one side of the equation. Let's go step-by-step.
Step 1: Move the constant term to the other side of the equation.
-8x - 10 + 10 = -90 + 10
-8x = -80
Step 2: Divide both sides of the equation by the coefficient of x (-8).
(-8x)/(-8) = (-80)/(-8)
x = 10
Therefore, x is equal to 10.