18-x=x

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Solution for 18-x=x equation:


Simplifying
18 + -1x = x

Solving
18 + -1x = x

Solving for variable 'x'.

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

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

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

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

Add '-18' to each side of the equation.
18 + -18 + -2x = 0 + -18

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

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

Divide each side by '-2'.
x = 9

Simplifying
x = 9

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