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

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



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

We move all terms to the left:

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

We add all the numbers together, and all the variables

-21x-(7(5x-9))-9=0



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

7(5x-9)

We multiply parentheses

35x-63

Back to the equation:

-(35x-63)



We get rid of parentheses

-21x-35x+63-9=0

We add all the numbers together, and all the variables

-56x+54=0

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

-56x=-54

x=-54/-56

x=27/28

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