.4x+200=8400

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Solution for .4x+200=8400 equation: 


Simplifying
0.4x + 200 = 8400

Reorder the terms:
200 + 0.4x = 8400

Solving
200 + 0.4x = 8400

Solving for variable 'x'.

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

Add '-200' to each side of the equation.
200 + -200 + 0.4x = 8400 + -200

Combine like terms: 200 + -200 = 0
0 + 0.4x = 8400 + -200
0.4x = 8400 + -200

Combine like terms: 8400 + -200 = 8200
0.4x = 8200

Divide each side by '0.4'.
x = 20500

Simplifying
x = 20500

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