-7x-9=28-7(5x-9)

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Solution for -7x-9=28-7(5x-9) equation: 



-7x-9=28-7(5x-9)

We move all terms to the left:

-7x-9-(28-7(5x-9))=0



We calculate terms in parentheses: -(28-7(5x-9)), so:

28-7(5x-9)

determiningTheFunctionDomain
-7(5x-9)+28

We multiply parentheses

-35x+63+28

We add all the numbers together, and all the variables

-35x+91

Back to the equation:

-(-35x+91)



We get rid of parentheses

-7x+35x-91-9=0

We add all the numbers together, and all the variables

28x-100=0

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

28x=100

x=100/28

x=3+4/7

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