Answer
$$x = - 6$$
Work Step by Step
$$\eqalign{
& x{\text{ - intercept }}\left( { - 6,0} \right) \cr
& {\text{Parallel to the line: }}l = 2x - 5 = 0 \cr
& {\text{The slope of the line }}2x - 5 = 0{\text{ is undefined}} \cr
& \to x = \frac{5}{2},{\text{ }}\left( {{\text{Vertical line}}} \right) \cr
& {\text{Both lines are parallel}}{\text{, then they have the same slope}} \cr
& x = {x_1},{\text{ }}\underbrace {\left( { - 6,0} \right)}_{\left( {{x_1},0} \right)} \cr
& x = - 6 \cr
& \cr
& {\text{Graph}} \cr} $$
