12+6=13.5x-81

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Solution for 12+6=13.5x-81 equation: 



12+6=13.5x-81

We move all terms to the left:

12+6-(13.5x-81)=0

We add all the numbers together, and all the variables

-(13.5x-81)+18=0

We get rid of parentheses

-13.5x+81+18=0

We add all the numbers together, and all the variables

-13.5x+99=0

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

-13.5x=-99

x=-99/-13.5

x=7+3/9

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