6x-9=3+9

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Solution for 6x-9=3+9 equation: 



6x-9=3+9

We move all terms to the left:

6x-9-(3+9)=0

We add all the numbers together, and all the variables

6x-9-12=0

We add all the numbers together, and all the variables

6x-21=0

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

6x=21

x=21/6

x=3+1/2

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