3x-9x=x+7

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Solution for 3x-9x=x+7 equation: 



3x-9x=x+7

We move all terms to the left:

3x-9x-(x+7)=0

We add all the numbers together, and all the variables

-6x-(x+7)=0

We get rid of parentheses

-6x-x-7=0

We add all the numbers together, and all the variables

-7x-7=0

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

-7x=7

x=7/-7

x=-1

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