18=2x+x+3

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Solution for 18=2x+x+3 equation: 



18=2x+x+3

We move all terms to the left:

18-(2x+x+3)=0

We add all the numbers together, and all the variables

-(3x+3)+18=0

We get rid of parentheses

-3x-3+18=0

We add all the numbers together, and all the variables

-3x+15=0

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

-3x=-15

x=-15/-3

x=+5

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