9+3x+3x=45

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Solution for 9+3x+3x=45 equation: 


Simplifying
9 + 3x + 3x = 45

Combine like terms: 3x + 3x = 6x
9 + 6x = 45

Solving
9 + 6x = 45

Solving for variable 'x'.

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

Add '-9' to each side of the equation.
9 + -9 + 6x = 45 + -9

Combine like terms: 9 + -9 = 0
0 + 6x = 45 + -9
6x = 45 + -9

Combine like terms: 45 + -9 = 36
6x = 36

Divide each side by '6'.
x = 6

Simplifying
x = 6

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