3x-18=9x+54

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Solution for 3x-18=9x+54 equation: 



3x-18=9x+54

We move all terms to the left:

3x-18-(9x+54)=0

We get rid of parentheses

3x-9x-54-18=0

We add all the numbers together, and all the variables

-6x-72=0

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

-6x=72

x=72/-6

x=-12

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