-9-2f=-3(2f-9)

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Solution for -9-2f=-3(2f-9) equation: 



-9-2f=-3(2f-9)

We move all terms to the left:

-9-2f-(-3(2f-9))=0



We calculate terms in parentheses: -(-3(2f-9)), so:

-3(2f-9)

We multiply parentheses

-6f+27

Back to the equation:

-(-6f+27)



We get rid of parentheses

-2f+6f-27-9=0

We add all the numbers together, and all the variables

4f-36=0

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

4f=36

f=36/4

f=9

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