5x-9x=80

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Solution for 5x-9x=80 equation: 


Simplifying
5x + -9x = 80

Combine like terms: 5x + -9x = -4x
-4x = 80

Solving
-4x = 80

Solving for variable 'x'.

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

Divide each side by '-4'.
x = -20

Simplifying
x = -20

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