-x=8x+9

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Solution for -x=8x+9 equation: 


Simplifying
-1x = 8x + 9

Reorder the terms:
-1x = 9 + 8x

Solving
-1x = 9 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
-1x + -8x = 9 + 8x + -8x

Combine like terms: -1x + -8x = -9x
-9x = 9 + 8x + -8x

Combine like terms: 8x + -8x = 0
-9x = 9 + 0
-9x = 9

Divide each side by '-9'.
x = -1

Simplifying
x = -1

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