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

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



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

We move all terms to the left:

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

We get rid of parentheses

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



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

(7x-7)

We get rid of parentheses

7x-7

Back to the equation:

-(7x-7)



We get rid of parentheses

9x-7x+7-9=0

We add all the numbers together, and all the variables

2x-2=0

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

2x=2

x=2/2

x=1

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