-3x+12=42-12

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


Simplifying
-3x + 12 = 42 + -12

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

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

Solving
12 + -3x = 30

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 = 30 + -12

Combine like terms: 12 + -12 = 0
0 + -3x = 30 + -12
-3x = 30 + -12

Combine like terms: 30 + -12 = 18
-3x = 18

Divide each side by '-3'.
x = -6

Simplifying
x = -6

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