-90-2x=99-9

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Solution for -90-2x=99-9 equation: 


Simplifying
-90 + -2x = 99 + -9

Combine like terms: 99 + -9 = 90
-90 + -2x = 90

Solving
-90 + -2x = 90

Solving for variable 'x'.

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

Add '90' to each side of the equation.
-90 + 90 + -2x = 90 + 90

Combine like terms: -90 + 90 = 0
0 + -2x = 90 + 90
-2x = 90 + 90

Combine like terms: 90 + 90 = 180
-2x = 180

Divide each side by '-2'.
x = -90

Simplifying
x = -90

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