18+2x+x=

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Solution for 18+2x+x= equation: 


Simplifying
18 + 2x + x = 0

Combine like terms: 2x + x = 3x
18 + 3x = 0

Solving
18 + 3x = 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 + 3x = 0 + -18

Combine like terms: 18 + -18 = 0
0 + 3x = 0 + -18
3x = 0 + -18

Combine like terms: 0 + -18 = -18
3x = -18

Divide each side by '3'.
x = -6

Simplifying
x = -6

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