3(-f-9)=-(9f+3)

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



3(-f-9)=-(9f+3)

We move all terms to the left:

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

We add all the numbers together, and all the variables

3(-1f-9)-(-(9f+3))=0

We multiply parentheses

-3f-(-(9f+3))-27=0



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

-(9f+3)

We get rid of parentheses

-9f-3

Back to the equation:

-(-9f-3)



We get rid of parentheses

-3f+9f+3-27=0

We add all the numbers together, and all the variables

6f-24=0

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

6f=24

f=24/6

f=4

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