9(x+1)=-3(-x+7)

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Solution for 9(x+1)=-3(-x+7) equation: 



9(x+1)=-3(-x+7)

We move all terms to the left:

9(x+1)-(-3(-x+7))=0

We add all the numbers together, and all the variables

9(x+1)-(-3(-1x+7))=0

We multiply parentheses

9x-(-3(-1x+7))+9=0



We calculate terms in parentheses: -(-3(-1x+7)), so:

-3(-1x+7)

We multiply parentheses

3x-21

Back to the equation:

-(3x-21)



We get rid of parentheses

9x-3x+21+9=0

We add all the numbers together, and all the variables

6x+30=0

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

6x=-30

x=-30/6

x=-5

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