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

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



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

We move all terms to the left:

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

We multiply parentheses

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



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

7(x-3)

We multiply parentheses

7x-21

Back to the equation:

-(7x-21)



We get rid of parentheses

9x-7x+21+9=0

We add all the numbers together, and all the variables

2x+30=0

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

2x=-30

x=-30/2

x=-15

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