6x+2x-9=12x+9

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Solution for 6x+2x-9=12x+9 equation: 



6x+2x-9=12x+9

We move all terms to the left:

6x+2x-9-(12x+9)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

8x-12x-9-9=0

We add all the numbers together, and all the variables

-4x-18=0

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

-4x=18

x=18/-4

x=-4+1/2

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