Solve for P
P=3000000-4000M
Solve for M
M=-\frac{P}{4000}+750
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750-0.00025P=M
Swap sides so that all variable terms are on the left hand side.
-0.00025P=M-750
Subtract 750 from both sides.
\frac{-0.00025P}{-0.00025}=\frac{M-750}{-0.00025}
Multiply both sides by -4000.
P=\frac{M-750}{-0.00025}
Dividing by -0.00025 undoes the multiplication by -0.00025.
P=3000000-4000M
Divide M-750 by -0.00025 by multiplying M-750 by the reciprocal of -0.00025.
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