px+400=800

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Solution for px+400=800 equation: 


Simplifying
px + 400 = 800

Reorder the terms:
400 + px = 800

Solving
400 + px = 800

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '-400' to each side of the equation.
400 + -400 + px = 800 + -400

Combine like terms: 400 + -400 = 0
0 + px = 800 + -400
px = 800 + -400

Combine like terms: 800 + -400 = 400
px = 400

Divide each side by 'x'.
p = 400x-1

Simplifying
p = 400x-1

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