TeX source:

\begin{aligned} &E C A C=E C A C_{0}+C B_{A} \\ &E C A C=B C A C_{0}\left(1+P_{C}\right)+C B^{*} P_{C}+C B^{*}\left(1-P_{C}\right) *\left(1-\frac{P_{C} * C B}{W_{C}^{*} B C A C_{0}}\right) \\ &E C A C=B C A C_{0}\left(1+P_{C}\right)+B_{C} * B C A C_{0} * P_{C}+B_{C} * B C A C_{0} *\left(1-P_{C}\right) *\left(1-\frac{P_{C}^{*} B_{C}}{W_{C}}\right) \end{aligned}