Answer:
[tex]\displaystyle S = \frac{N + F}{P - V}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Equality Properties
Algebra I
Step-by-step explanation:
Step 1: Define
[tex]\displaystyle N = S(P - V) - F[/tex]
Step 2: Solve for S
Rearrange.