x+2x+x=9

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Solution for x+2x+x=9 equation: 


Simplifying
x + 2x + x = 9

Combine like terms: x + 2x = 3x
3x + x = 9

Combine like terms: 3x + x = 4x
4x = 9

Solving
4x = 9

Solving for variable 'x'.

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

Divide each side by '4'.
x = 2.25

Simplifying
x = 2.25

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