9x-42-12x=39

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Solution for 9x-42-12x=39 equation:


Simplifying
9x + -42 + -12x = 39

Reorder the terms:
-42 + 9x + -12x = 39

Combine like terms: 9x + -12x = -3x
-42 + -3x = 39

Solving
-42 + -3x = 39

Solving for variable 'x'.

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

Add '42' to each side of the equation.
-42 + 42 + -3x = 39 + 42

Combine like terms: -42 + 42 = 0
0 + -3x = 39 + 42
-3x = 39 + 42

Combine like terms: 39 + 42 = 81
-3x = 81

Divide each side by '-3'.
x = -27

Simplifying
x = -27

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