Solve for P, L, W
P=432
L=89
W=127
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P=2\times 89+2\times 127
Consider the first equation. Insert the known values of variables into the equation.
P=178+254
Do the multiplications.
P=432
Add 178 and 254 to get 432.
P=432 L=89 W=127
The system is now solved.
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