12x-9x-42=27

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Solution for 12x-9x-42=27 equation:


Simplifying
12x + -9x + -42 = 27

Reorder the terms:
-42 + 12x + -9x = 27

Combine like terms: 12x + -9x = 3x
-42 + 3x = 27

Solving
-42 + 3x = 27

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 = 27 + 42

Combine like terms: -42 + 42 = 0
0 + 3x = 27 + 42
3x = 27 + 42

Combine like terms: 27 + 42 = 69
3x = 69

Divide each side by '3'.
x = 23

Simplifying
x = 23

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