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. $$\left( \begin{array} { c } \frac { 2 } { 3 } x + \frac { 1 } { 4 } y = 0 \\\frac { 3 } { 2 } x - \frac { 3 } { 8 } y = - 15\end{array} \right)$$