x-[-(-2x)]=9

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Solution for x-[-(-2x)]=9 equation: 


Simplifying
x + -1[-1(-2x)] = 9

Remove parenthesis around (-2x)
x + -1[-1 * -2x] = 9

Multiply -1 * -2
x + -1[2x] = 9

Remove brackets around [2x]
x + -1 * 2x = 9

Multiply -1 * 2
x + -2x = 9

Combine like terms: x + -2x = -1x
-1x = 9

Solving
-1x = 9

Solving for variable 'x'.

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

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

Simplifying
x = -9

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