3x+(-12)=-42

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Solution for 3x+(-12)=-42 equation: 


Simplifying
3x + (-12) = -42
3x + -12 = -42

Reorder the terms:
-12 + 3x = -42

Solving
-12 + 3x = -42

Solving for variable 'x'.

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

Add '12' to each side of the equation.
-12 + 12 + 3x = -42 + 12

Combine like terms: -12 + 12 = 0
0 + 3x = -42 + 12
3x = -42 + 12

Combine like terms: -42 + 12 = -30
3x = -30

Divide each side by '3'.
x = -10

Simplifying
x = -10

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