12x=-3x

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Solution for 12x=-3x equation: 


Simplifying
12x = -3x

Solving
12x = -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.
12x + 3x = -3x + 3x

Combine like terms: 12x + 3x = 15x
15x = -3x + 3x

Combine like terms: -3x + 3x = 0
15x = 0

Divide each side by '15'.
x = 0

Simplifying
x = 0

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