x+9=3x-27

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Solution for x+9=3x-27 equation: 



x+9=3x-27

We move all terms to the left:

x+9-(3x-27)=0

We get rid of parentheses

x-3x+27+9=0

We add all the numbers together, and all the variables

-2x+36=0

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

-2x=-36

x=-36/-2

x=+18

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