x+18=45-2x

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Solution for x+18=45-2x equation: 



x+18=45-2x

We move all terms to the left:

x+18-(45-2x)=0

We add all the numbers together, and all the variables

x-(-2x+45)+18=0

We get rid of parentheses

x+2x-45+18=0

We add all the numbers together, and all the variables

3x-27=0

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

3x=27

x=27/3

x=9

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