z+3x=-12

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Solution for z+3x=-12 equation: 


Simplifying
z + 3x = -12

Reorder the terms:
3x + z = -12

Solving
3x + z = -12

Solving for variable 'x'.

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

Add '-1z' to each side of the equation.
3x + z + -1z = -12 + -1z

Combine like terms: z + -1z = 0
3x + 0 = -12 + -1z
3x = -12 + -1z

Divide each side by '3'.
x = -4 + -0.3333333333z

Simplifying
x = -4 + -0.3333333333z

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