3x+-3=-12

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Solution for 3x+-3=-12 equation: 


Simplifying
3x + -3 = -12

Reorder the terms:
-3 + 3x = -12

Solving
-3 + 3x = -12

Solving for variable 'x'.

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

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

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

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

Divide each side by '3'.
x = -3

Simplifying
x = -3

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