Question

Solve for P:   A=P+Prt

Answer 1

$P+Prt=A\\\\P(1+rt)=A\ \ \ \ |divide\ both\ sides\ by\ (1+rt)\\\\P=\frac{A}{1+rt}$

Answer 2

$A=P+Prt\\ P(1+rt)=A\\ P=\frac{A}{1+rt}$