7x-9x=40

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Solution for 7x-9x=40 equation: 


Simplifying
7x + -9x = 40

Combine like terms: 7x + -9x = -2x
-2x = 40

Solving
-2x = 40

Solving for variable 'x'.

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

Divide each side by '-2'.
x = -20

Simplifying
x = -20

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