450=2x+x

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Solution for 450=2x+x equation: 



450=2x+x

We move all terms to the left:

450-(2x+x)=0

We add all the numbers together, and all the variables

-(+3x)+450=0

We get rid of parentheses

-3x+450=0

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

-3x=-450

x=-450/-3

x=+150

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