[tex] \frac{19-5}{2x} =34[/tex]
Multiply both sides by 2x :
[tex] \frac{19-5}{2x} *2x = 34*2x[/tex]
refine:
[tex]14 = 68x[/tex]
[tex]68x = 14[/tex]
[tex]x = \frac{14}{68} [/tex]
[tex]x = \frac{7}{34} [/tex]
decimal : [tex]0.20588[/tex]
hope this helps!