To solve the equation √(5x - 1) - 4 = 16, you need to isolate the variable x. Here are the steps:
Add 4 to both sides of the equation: √(5x - 1) = 20
Square both sides of the equation to eliminate the square root: (√(5x - 1))^2 = 20^2 5x - 1 = 400
Add 1 to both sides of the equation: 5x = 401
Divide both sides of the equation by 5: x = 401/5
So the solution to the equation is: x = 80.2
