I've never really studied math, but was wondering, is there a designated symbol used for implying "versus", or would you just write "Vs."?
For example, I'm working on a calculation like this:
Cost expense A "versus" cost expense B
+ cost expense C
+ cost expense D
- Expense E
= Total 1 vs Total 2
There is no commonly used symbol for versus of which I'm aware. What you're asking for seems closest to some usage of the exclusive OR symbol (i.e XOR, $\oplus$), but I don't think that works here, as you seem to be looking for one number or the other, not a logical output.
You could use a vector equation to have both numbers present
\begin{align} \begin{pmatrix} A \\ B \end{pmatrix} + C + D - E = \begin{pmatrix} T_A \\ T_B \end{pmatrix} \end{align}
where it is implied that $C,D,E$ are multiplied by $\begin{pmatrix}1\\1\end{pmatrix}$ and where $T_A,T_B$ represent the totals in either scenario.