-4=2(f-9)

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Solution for -4=2(f-9) equation: 



-4=2(f-9)

We move all terms to the left:

-4-(2(f-9))=0



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

2(f-9)

We multiply parentheses

2f-18

Back to the equation:

-(2f-18)



We get rid of parentheses

-2f+18-4=0

We add all the numbers together, and all the variables

-2f+14=0

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

-2f=-14

f=-14/-2

f=+7

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