-9-9x=90

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Solution for -9-9x=90 equation: 


Simplifying
-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 = 99
-9x = 99

Divide each side by '-9'.
x = -11

Simplifying
x = -11

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