-9=7x+7x-9

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



-9=7x+7x-9

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(14x-9)-9=0

We get rid of parentheses

-14x+9-9=0

We add all the numbers together, and all the variables

-14x=0

x=0/-14

x=0

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