9=x+3-7x

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



9=x+3-7x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

6x-3+9=0

We add all the numbers together, and all the variables

6x+6=0

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

6x=-6

x=-6/6

x=-1

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