[tex]Simplify \ 3/7 \\ \\ \boxed{4x- \frac{3}{7} =0} \\ \\ (KEY \ POINT) \swarrow \\ \\ \boxed{\boxed{\bf{ \frac{23x-3}{7} *7=0*7}}} \\ \\ Add \ 3 \ to \ both \ sides \ of \ the \ equation :
28x = 3 [/tex]
[tex]Divide \ both \ sides \ of \ the \ equation \ by \ 28: \\
x = \boxed{\bf3/28}[/tex]
