7x-9=12+7x

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Solution for 7x-9=12+7x equation: 



7x-9=12+7x

We move all terms to the left:

7x-9-(12+7x)=0

We add all the numbers together, and all the variables

7x-(7x+12)-9=0

We get rid of parentheses

7x-7x-12-9=0

We add all the numbers together, and all the variables

-21!=0

There is no solution for this equation

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