x-3x-9=-9

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Solution for x-3x-9=-9 equation: 


Simplifying
x + -3x + -9 = -9

Reorder the terms:
-9 + x + -3x = -9

Combine like terms: x + -3x = -2x
-9 + -2x = -9

Add '9' to each side of the equation.
-9 + 9 + -2x = -9 + 9

Combine like terms: -9 + 9 = 0
0 + -2x = -9 + 9
-2x = -9 + 9

Combine like terms: -9 + 9 = 0
-2x = 0

Solving
-2x = 0

Solving for variable 'x'.

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

Divide each side by '-2'.
x = 0

Simplifying
x = 0

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