x+3x+6x=400

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Solution for x+3x+6x=400 equation: 


Simplifying
x + 3x + 6x = 400

Combine like terms: x + 3x = 4x
4x + 6x = 400

Combine like terms: 4x + 6x = 10x
10x = 400

Solving
10x = 400

Solving for variable 'x'.

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

Divide each side by '10'.
x = 40

Simplifying
x = 40

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