[tex]\textbf{Resolvemos:}\\\\\mathsf{\dfrac{2x}{7}-\dfrac{1}{4}=\dfrac{3x}{8}+\dfrac{1}{5}}\\\\\\\mathsf{280\cdot\left(\dfrac{2x}{7}-\dfrac{1}{4}=\dfrac{3x}{8}+\dfrac{1}{5}\right)}\\\\\\\mathsf{80x-70=105x+56}\\\\\\\mathsf{80x-105x=56+70}\\\\\\\mathsf{-25x=126}\\\\\\\ \boxed{\mathbf{x=-\dfrac{126}{25}}}\quad \Leftarrow\mathbf{Respuesta}[/tex]
