3x+12=-3x

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


Simplifying
3x + 12 = -3x

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

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

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

Combine like terms: -3x + 3x = 0
12 + 6x = 0

Add '-12' to each side of the equation.
12 + -12 + 6x = 0 + -12

Combine like terms: 12 + -12 = 0
0 + 6x = 0 + -12
6x = 0 + -12

Combine like terms: 0 + -12 = -12
6x = -12

Divide each side by '6'.
x = -2

Simplifying
x = -2

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