-9x-12x=84

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Solution for -9x-12x=84 equation: 


Simplifying
-9x + -12x = 84

Combine like terms: -9x + -12x = -21x
-21x = 84

Solving
-21x = 84

Solving for variable 'x'.

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

Divide each side by '-21'.
x = -4

Simplifying
x = -4

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