Solve for r: P= _A_
( 1+ rt)
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here.
I will guess that the above means "Solve P = A / (1 + rt) for r", as the subject line says. To clarify with LaTeX:
. . . . .
If so, then the first step in
solving this literal equation should probably be multiplying through by the denominator to get:
. . . . .
. . . . .
Subtract the "P" to the right-hand side, and then divide both sides by "Pt" to isolate "r".