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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