20f=-20f-5(9f+17)

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Solution for 20f=-20f-5(9f+17) equation: 



20f=-20f-5(9f+17)

We move all terms to the left:

20f-(-20f-5(9f+17))=0



We calculate terms in parentheses: -(-20f-5(9f+17)), so:

-20f-5(9f+17)

We multiply parentheses

-20f-45f-85

We add all the numbers together, and all the variables

-65f-85

Back to the equation:

-(-65f-85)



We get rid of parentheses

20f+65f+85=0

We add all the numbers together, and all the variables

85f+85=0

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

85f=-85

f=-85/85

f=-1

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