18-2x=9+x

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Solution for 18-2x=9+x equation: 



18-2x=9+x

We move all terms to the left:

18-2x-(9+x)=0

We add all the numbers together, and all the variables

-2x-(x+9)+18=0

We get rid of parentheses

-2x-x-9+18=0

We add all the numbers together, and all the variables

-3x+9=0

We move all terms containing x to the left, all other terms to the right

-3x=-9

x=-9/-3

x=+3

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