3x-6=-42

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Solution for 3x-6=-42 equation: 


Simplifying
3x + -6 = -42

Reorder the terms:
-6 + 3x = -42

Solving
-6 + 3x = -42

Solving for variable 'x'.

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

Add '6' to each side of the equation.
-6 + 6 + 3x = -42 + 6

Combine like terms: -6 + 6 = 0
0 + 3x = -42 + 6
3x = -42 + 6

Combine like terms: -42 + 6 = -36
3x = -36

Divide each side by '3'.
x = -12

Simplifying
x = -12

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