(-x-1)=8

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Solution for (-x-1)=8 equation: 


Simplifying
(-1x + -1) = 8

Reorder the terms:
(-1 + -1x) = 8

Remove parenthesis around (-1 + -1x)
-1 + -1x = 8

Solving
-1 + -1x = 8

Solving for variable 'x'.

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

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

Combine like terms: -1 + 1 = 0
0 + -1x = 8 + 1
-1x = 8 + 1

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

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

Simplifying
x = -9

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