2(x+9)=x=21

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Solution for 2(x+9)=x=21 equation: 



2(x+9)=x=21

We move all terms to the left:

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

We add all the numbers together, and all the variables

-1x+2(x+9)=0

We multiply parentheses

-1x+2x+18=0

We add all the numbers together, and all the variables

x+18=0

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

x=-18

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