9x=21+6x

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Solution for 9x=21+6x equation: 


Simplifying
9x = 21 + 6x

Solving
9x = 21 + 6x

Solving for variable 'x'.

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

Add '-6x' to each side of the equation.
9x + -6x = 21 + 6x + -6x

Combine like terms: 9x + -6x = 3x
3x = 21 + 6x + -6x

Combine like terms: 6x + -6x = 0
3x = 21 + 0
3x = 21

Divide each side by '3'.
x = 7

Simplifying
x = 7

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