9x-12+3x=42-6x

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Solution for 9x-12+3x=42-6x equation:


Simplifying
9x + -12 + 3x = 42 + -6x

Reorder the terms:
-12 + 9x + 3x = 42 + -6x

Combine like terms: 9x + 3x = 12x
-12 + 12x = 42 + -6x

Solving
-12 + 12x = 42 + -6x

Solving for variable 'x'.

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

Add '6x' to each side of the equation.
-12 + 12x + 6x = 42 + -6x + 6x

Combine like terms: 12x + 6x = 18x
-12 + 18x = 42 + -6x + 6x

Combine like terms: -6x + 6x = 0
-12 + 18x = 42 + 0
-12 + 18x = 42

Add '12' to each side of the equation.
-12 + 12 + 18x = 42 + 12

Combine like terms: -12 + 12 = 0
0 + 18x = 42 + 12
18x = 42 + 12

Combine like terms: 42 + 12 = 54
18x = 54

Divide each side by '18'.
x = 3

Simplifying
x = 3

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