Short Answer

Isolating the Principal in Simple Interest Calculations

An assistant at a credit union is verifying the documentation for a vehicle loan. After writing down the simple interest formula I=PrtI = Prt and substituting the values for interest (II), interest rate (rr), and time (tt), the assistant has the simplified equation in the form I=P(rt)I = P(rt). To solve for the principal (PP), what specific algebraic operation must the assistant recall to isolate the variable PP on one side of the equation?

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Updated 2026-09-18

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