(8x)+(3x)=9+(12x)

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Solution for (8x)+(3x)=9+(12x) equation: 



(8x)+(3x)=9+(12x)

We move all terms to the left:

(8x)+(3x)-(9+(12x))=0

We add all the numbers together, and all the variables

8x+3x-(12x+9)=0

We add all the numbers together, and all the variables

11x-(12x+9)=0

We get rid of parentheses

11x-12x-9=0

We add all the numbers together, and all the variables

-1x-9=0

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

-x=9

x=9/-1

x=-9

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