400+-400x=800

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Solution for 400+-400x=800 equation: 


Simplifying
400 + -400x = 800

Solving
400 + -400x = 800

Solving for variable 'x'.

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

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

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

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

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

Simplifying
x = -1

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