\(\left\{{}\begin{matrix}4x-3y=6\\3y+4x=10\end{matrix}\right.\\ \Leftrightarrow\left\{{}\begin{matrix}4x-3y=6\\4x-3y+3y+4x=6+10\end{matrix}\right.\\ \Leftrightarrow\left\{{}\begin{matrix}4x-3y=6\\8x=16\end{matrix}\right.\\ \Leftrightarrow\left\{{}\begin{matrix}4.2-3y=6\\x=2\end{matrix}\right.\\ \Leftrightarrow\left\{{}\begin{matrix}y=\dfrac{2}{3}\\x=2\end{matrix}\right.\)