-6(9+2x)=-90

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Solution for -6(9+2x)=-90 equation: 


Simplifying
-6(9 + 2x) = -90
(9 * -6 + 2x * -6) = -90
(-54 + -12x) = -90

Solving
-54 + -12x = -90

Solving for variable 'x'.

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

Add '54' to each side of the equation.
-54 + 54 + -12x = -90 + 54

Combine like terms: -54 + 54 = 0
0 + -12x = -90 + 54
-12x = -90 + 54

Combine like terms: -90 + 54 = -36
-12x = -36

Divide each side by '-12'.
x = 3

Simplifying
x = 3

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