Solve Each System by Using Either the Substitution or the Elimination-By-Addition

Short Answer

Solve each system by using either the substitution or the elimination-by-addition method, whichever seems more appropriate. $$\left( \begin{array} { c } 3 ( x - 1 ) - 4 ( y + 2 ) = 43 \\4 ( x + 2 ) + 3 ( y - 1 ) = - 23\end{array} \right)$$