7x=9+3x

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Solution for 7x=9+3x equation: 


Simplifying
7x = 9 + 3x

Solving
7x = 9 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
7x + -3x = 9 + 3x + -3x

Combine like terms: 7x + -3x = 4x
4x = 9 + 3x + -3x

Combine like terms: 3x + -3x = 0
4x = 9 + 0
4x = 9

Divide each side by '4'.
x = 2.25

Simplifying
x = 2.25

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