9-(9-x)=7-(7-x)

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Solution for 9-(9-x)=7-(7-x) equation: 



9-(9-x)=7-(7-x)

We move all terms to the left:

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

We add all the numbers together, and all the variables

-(-1x+9)-(7-(-1x+7))+9=0

We get rid of parentheses

1x-(7-(-1x+7))-9+9=0



We calculate terms in parentheses: -(7-(-1x+7)), so:

7-(-1x+7)

determiningTheFunctionDomain
-(-1x+7)+7

We get rid of parentheses

1x-7+7

We add all the numbers together, and all the variables

x

Back to the equation:

-(x)



We add all the numbers together, and all the variables

=0

x=0/1

x=0

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