-9x-9=-90

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Solution for -9x-9=-90 equation: 


Simplifying
-9x + -9 = -90

Reorder the terms:
-9 + -9x = -90

Solving
-9 + -9x = -90

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + -9x = -90 + 9

Combine like terms: -9 + 9 = 0
0 + -9x = -90 + 9
-9x = -90 + 9

Combine like terms: -90 + 9 = -81
-9x = -81

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

Simplifying
x = 9

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