-3=9+7x

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Solution for -3=9+7x equation: 



-3=9+7x

We move all terms to the left:

-3-(9+7x)=0

We add all the numbers together, and all the variables

-(7x+9)-3=0

We get rid of parentheses

-7x-9-3=0

We add all the numbers together, and all the variables

-7x-12=0

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

-7x=12

x=12/-7

x=-1+5/7

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