Find the value of $x$ when $ (5x - 4) = 0 $

Hint: First of all take the given expression and then move all the terms on opposite sides of the equation and make the required term “x” the subject and simplify the expression for the resultant required value for “x”.

Complete step-by-step answer:
Take the given expression: $ (5x - 4) = 0 $
Move the constant on the opposite sides. When you move any term from one side to another side then the sign of the terms also changes. Positive term becomes the negative term and the negative term becomes the positive term.
 $ 5x = 4 $
Term multiplicative on one side is moved to the opposite side then it goes to the denominator.
 $ \Rightarrow x = \dfrac{4}{5} $
This is the required solution.
So, the correct answer is “ $ x = \dfrac{4}{5} $ ”.

Note: Be careful about the sign convention while simplifying the given expression. Always remember that the sign of the terms changes when the term is moved from one side to the other. When the terms are expressed in the form of the fraction, always remove the common factors from the numerator and the denominator and find its simplified form.