x-2(x+9)=0

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Solution for x-2(x+9)=0 equation:


Simplifying
x + -2(x + 9) = 0

Reorder the terms:
x + -2(9 + x) = 0
x + (9 * -2 + x * -2) = 0
x + (-18 + -2x) = 0

Reorder the terms:
-18 + x + -2x = 0

Combine like terms: x + -2x = -1x
-18 + -1x = 0

Solving
-18 + -1x = 0

Solving for variable 'x'.

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

Add '18' to each side of the equation.
-18 + 18 + -1x = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -1x = 0 + 18
-1x = 0 + 18

Combine like terms: 0 + 18 = 18
-1x = 18

Divide each side by '-1'.
x = -18

Simplifying
x = -18

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