## Another Complex number

If $\mathbf{z_{1}}$ and $\mathbf{z_{2}}$ are two distinct Complex number such that $\mathbf{Re(z_{1})>0}$ and $\mathbf{Im(z_{2})<0}$.then find value of :
$\mathbf{\frac{z_{1}+z_{2}}{z_{1}-z_{2}}=}$