7x=9(x-4)

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Solution for 7x=9(x-4) equation: 



7x=9(x-4)

We move all terms to the left:

7x-(9(x-4))=0



We calculate terms in parentheses: -(9(x-4)), so:

9(x-4)

We multiply parentheses

9x-36

Back to the equation:

-(9x-36)



We get rid of parentheses

7x-9x+36=0

We add all the numbers together, and all the variables

-2x+36=0

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

-2x=-36

x=-36/-2

x=+18

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