3x=x+x+9

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Solution for 3x=x+x+9 equation: 


Simplifying
3x = x + x + 9

Reorder the terms:
3x = 9 + x + x

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

Solving
3x = 9 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
3x + -2x = 9 + 2x + -2x

Combine like terms: 3x + -2x = 1x
1x = 9 + 2x + -2x

Combine like terms: 2x + -2x = 0
1x = 9 + 0
1x = 9

Divide each side by '1'.
x = 9

Simplifying
x = 9

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