2x+x=9+9

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


Simplifying
2x + x = 9 + 9

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

Combine like terms: 9 + 9 = 18
3x = 18

Solving
3x = 18

Solving for variable 'x'.

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

Divide each side by '3'.
x = 6

Simplifying
x = 6

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