7x-9x=80

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Solution for 7x-9x=80 equation: 


Simplifying
7x + -9x = 80

Combine like terms: 7x + -9x = -2x
-2x = 80

Solving
-2x = 80

Solving for variable 'x'.

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

Divide each side by '-2'.
x = -40

Simplifying
x = -40

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