369=2x+x

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Solution for 369=2x+x equation: 



369=2x+x

We move all terms to the left:

369-(2x+x)=0

We add all the numbers together, and all the variables

-(+3x)+369=0

We get rid of parentheses

-3x+369=0

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

-3x=-369

x=-369/-3

x=+123

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