9x+3x=-6

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Solution for 9x+3x=-6 equation: 


Simplifying
9x + 3x = -6

Combine like terms: 9x + 3x = 12x
12x = -6

Solving
12x = -6

Solving for variable 'x'.

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

Divide each side by '12'.
x = -0.5

Simplifying
x = -0.5

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